January |
 | Columbia Gorge (East) | January 7, 2021: The Labyrinth (Columbia River Gorge, Washington) |
 | Hawaii | January 8-19, 2017: Kaua'i, Hawaii |
| Hawaii | January 9-16, 2007: Kaua'i, Hawaii |
 | Western Oregon | January 11, 2015: Silver Falls State Park (Marion County, Oregon) |
 | Oregon Coast | January 14, 2022: Yaquina Head (Lincoln County, Oregon) |
 | Central Oregon | January 18, 2014: Misery Ridge Loop (Smith Rock State Park, Oregon) |
 | Columbia Gorge (West) | January 18, 2016: Hamilton Mountain (Columbia River Gorge, Washington) |
| Columbia Gorge (West) | January 21, 2022: Winter on Dog Mountain (Columbia River Gorge, Washington) |
| Columbia Gorge (East) | January 26 & February 12, 2023: Eastern Columbia River Gorge (Klickitat County, Washington & Wasco County, Oregon) |
| Western Oregon | January 27, 2011: Gales Creek (Coast Range, Oregon) |
| Hawaii | January 30 - February 6, 2008: Kaua'i, Hawaii |
February |
| Oregon Coast | February 5, 2012: Cape Lookout State Park (Oregon) |
 | Mexico | February 6-10, 2009: San José del Cabo (Baja California Sur, Mexico) |
| Columbia Gorge (East) | February 7, 2018: Mosier Plateau (Columbia River Gorge, Oregon) |
| Columbia Gorge (East) | February 10, 2022: Eastern Columbia River Gorge (Klickitat County, Washington) |
| Columbia Gorge (East) | February 11, 2015: Coyote Wall & The Labyrinth (Columbia River Gorge, Washington) |
 | Cascade Range | February 12, 2006: Ghost Ridge/Tri-County Ridge snowshoeing |
| Cascade Range | February 12, 2017: High Hut (Tahoma State Forest, Washington) |
| Columbia Gorge (East) | February 12, 2020: Coyote Wall & The Labyrinth (Columbia River Gorge, Washington) |
| Columbia Gorge (East) | January 26 & February 12, 2023: Eastern Columbia River Gorge (Klickitat County, Washington & Wasco County, Oregon) |
 | Desert Southwest | February 18, 2016: Brown's Peak (Tonto National Forest, Arizona) |
| Desert Southwest | February 19, 2016: Picacho Peak State Park (Pinal County, Arizona) |
 | Southern California | February 19-20, 2019: Anza-Borrego Desert State Park (California) |
| Desert Southwest | February 20-22, 2016: Grand Canyon & Northern Arizona |
| Southern California | February 21-22, 2019: San Diego, California |
| Cascade Range | February 22, 2014: White River snowshoeing (Mt. Hood National Forest, Oregon) |
| Desert Southwest | February 23, 2016: Butterfly Wonderland & McDowell Sonoran Preserve (Scottsdale, Arizona) |
| Columbia Gorge (East) | February 23, 2024: Catherine Creek & Major Creek (Klickitat County, Washington) |
| Hawaii | February 24 - March 4, 2015: The Big Island of Hawaii |
| Columbia Gorge (East) | February 24, 2021: Lower Deschutes River & Lyle Convict Road (Columbia River Gorge, Oregon & Washington) |
| Columbia Gorge (East) | February 28, 2010: The Labyrinth (Columbia River Gorge, Washington) |
| Columbia Gorge (East) | February 28, 2020: Memaloose Hills, Horsethief Butte, & Lyle Convict Road (Columbia River Gorge, Oregon & Washington) |
March |
| Columbia Gorge (East) | March 2, 2013: The Labyrinth (Columbia River Gorge, Washington) |
| Columbia Gorge (East) | March 2, 2016: Catherine Creek (Columbia River Gorge, Washington) |
| France | March 3-9, 2004: Paris & Alsace, France |
| Hawaii | March 3-11, 2002: Kaua'i, Hawaii |
| Mexico | March 5-9, 2012: San José del Cabo (Baja California Sur, Mexico) |
| Hawaii | March 5-11, 2013: Kaua'i, Hawaii |
| Hawaii | March 6-13, 2001: Kaua'i, Hawaii |
| Columbia Gorge (East) | March 6, 2022: Mill Creek Ridge & Mill Creek Preserve (Wasco County, Oregon) |
| Columbia Gorge (East) | March 11, 2018: Lower Deschutes River (Sherman County, Oregon) |
| Columbia Gorge (East) | March 11, 2021: Chenoweth Tableland & Seufert Park (The Dalles, OR), and Devil's Gap (Washington) |
| Columbia Gorge (East) | March 11, 2023: Eastern Columbia River Gorge (Klickitat County, Washington & Wasco County, Oregon) |
| Columbia Gorge (East) | March 12, 2014: Lyle Cherry Orchard (Columbia River Gorge, Washington) |
| Columbia Gorge (West) | March 12, 2020: Hamilton Mountain (Beacon Rock State Park, Washington) |
| Columbia Gorge (East) | March 14, 2024: Chenoweth Tableland (Wasco County, Oregon) |
| Columbia Gorge (East) | March 16, 2007: Catherine Creek (Columbia River Gorge, Washington) |
| Central Oregon | March 16, 2022: BLM Criterion Tract (Wasco County, Oregon) |
 | Northern California | March 17-18, 2009: Santa Cruz, California |
| Columbia Gorge (East) | March 17, 2021: Rowena Plateau & Rowena Dell (Columbia River Gorge, Oregon) |
| Columbia Gorge (East) | March 17, 2023: Gordon Ridge & Lower Deschutes River (Sherman County, Oregon) |
| Columbia Gorge (East) | March 18, 2010: Catherine Creek (Columbia River Gorge, Washington) |
| Columbia Gorge (West) | March 18, 2015: Eagle Creek (Columbia River Gorge, Oregon) |
| Columbia Gorge (East) | March 18, 2020: Columbia Hills, Doug's Beach, & Catherine Creek (Columbia River Gorge, Washington) |
| Cascade Range | March 20, 2018: Snowshoeing at Paradise (Mount Rainier National Park, Washington) |
| Columbia Gorge (East) | March 22, 2011: The Labyrinth & Dog Mountain (Columbia River Gorge, Washington) |
| Columbia Gorge (West) | March 22, 2020: Archer Mountain & Duncan Creek (Columbia River Gorge, Washington) |
| Columbia Gorge (East) | March 22, 2022: Lyle Cherry Orchard & Catherine Creek (Columbia River Gorge, Washington) |
| Columbia Gorge (East) | March 23, 2014: Lower Deschutes River (Sherman County, Oregon) |
| Columbia Gorge (East) | March 23, 2017: Coyote Wall & The Labyrinth (Columbia River Gorge, Washington) |
| Columbia Gorge (East) | March 24, 2019: Doug's Beach State Park (Columbia River Gorge, Washington) |
| Western Oregon | March 26, 2021: Liberty Hill (St. Helens, Oregon) |
| Western Oregon | March 26, 2022: Shotgun Creek, Horse Rock Ridge, & Cascadia State Park (Oregon) |
| Central Oregon | March 26, 2024: Cottonwood Canyon State Park (Oregon) |
| Columbia Gorge (East) | March 27, 2015: Mosier Plateau & Memaloose Pinnacles (Columbia River Gorge, Oregon) |
| Columbia Gorge (West) | March 28, 2015: Indian Point (Columbia River Gorge, Oregon) |
| Columbia Gorge (East) | March 29, 2023: Catherine Creek & Rowland Wall (Klickitat County, Washington) |
| Columbia Gorge (East) | March 30, 2016: Memaloose Hills & Rowena Plateau (Columbia River Gorge, Oregon) |
| Columbia Gorge (East) | March 31, 2017: Doug's Beach State Park (Columbia River Gorge, Washington) |
| Central Oregon | March 31, 2021: Cottonwood Canyon State Park (Oregon) |
April |
| Columbia Gorge (East) | April 1, 2008: Catherine Creek (Klickitat County, Washington) |
| Columbia Gorge (West) | April 1, 2016: Munra Point (Columbia River Gorge, Oregon) |
| Columbia Gorge (East) | April 1, 2024: Memaloose Hills (Wasco County, Oregon) |
| Columbia Gorge (East) | April 2, 2012: Catherine Creek (Columbia River Gorge, Washington) |
 | Southwestern Oregon | April 4, 2022: Agate Desert Preserve (Jackson County, Oregon) |
| Columbia Gorge (East) | April 5, 2007: Tom McCall Preserve (Columbia River Gorge, Oregon) |
| Northern California | April 5, 2022: Shasta Valley (Siskiyou County, California) |
| Northern California | April 5, 2024: Battle Creek (Shasta & Tehama Counties, California) |
| Columbia Gorge (East) | April 6, 2009: Lyle Cherry Orchard (Columbia River Gorge, Washington) |
| Western Oregon | April 6, 22, & 30, 2019: Camassia Natural Area (West Linn, Oregon) |
| Columbia Gorge (East) | April 6, 2021: Klickitat Wildlife Area (Klickitat County, Washington) |
| Southwestern Oregon | April 6, 2022: Illinois River Trail (Josephine County, Oregon) |
| Southern California | April 6, 2024: Panoche Hills & Griswold Canyon (San Benito County, California) |
| Western Oregon | April 7 & 15, 2016: Camassia Natural Area (West Linn, Oregon) |
| Southwestern Oregon | April 7, 2022: Illinois Valley (Josephine County, Oregon) |
| Southern California | April 7, 2024: Kern River Canyon (Sequoia National Forest, California) |
| Northern California | April 8, 2014: Garrapata State Park (Big Sur, California) |
| Desert Southwest | April 8, 2015: Siphon Draw, Superstition Mountains, Arizona |
| Desert Southwest | April 8, 2015: Pinnacle Peak Park (Scottsdale, Arizona) |
| Southwestern Oregon | April 8, 2022: Rogue River Trail (Josephine County, Oregon) |
 | Klamath Mountains & N California | April 8, 2023: Lava Beds National Monument (Modoc County, California) |
| Southern California | April 8, 2024: Carrizo Plain National Monument, west side (San Luis Obispo County, California) |
| Columbia Gorge (East) | April 9, 2016: Catherine Creek & Dalles Mountain Road (Columbia River Gorge, Washington) |
| Columbia Gorge (East) | April 9, 2018: Rowena Plateau & Rowena Dell (Columbia River Gorge, Oregon) |
| Southern California | April 9-10, 2023: Panamint Valley & Darwin Falls (Death Valley National Park, California) |
| Southern California | April 9, 2023: Owens Valley & Alabama Hills (Inyo County, California) |
| Southern California | April 9-10, 2024: Carrizo Plain National Monument, east side (San Luis Obispo County, California) |
| Northern California | April 10-11, 2019: Santa Cruz County (California) |
| Central Oregon | April 10, 2020: Spring Basin Wilderness & Deschutes River (Oregon) |
| Southern California | April 10, 2023: Mesquite Dunes, Mosaic Canyon, & Emigrant Canyon (Death Valley National Park, California) |
| Southern California | April 10, 2024: La Panza Range & Shell Creek Road (San Luis Obispo County, California) |
| Southern California | April 11, 2023: Jawbone Canyon & Red Rock Canyon State Park (Kern County, California) |
| Southern California | April 11, 2024: Coastal San Luis Obispo County & Southern Big Sur (California) |
| Columbia Gorge (East) | April 12, 2006: Catherine Creek (Columbia River Gorge, Washington) |
| Northern California | April 12, 2019: Pinnacles National Park (San Benito County, California) |
| Southwestern Oregon | April 12, 2021: Upper Table Rock (Jackson County, Oregon) |
| Southern California | April 12, 2023: Short Canyon, Sand Canyon, and Nine Mile Canyon (Kern & Inyo Counties, California) |
| Southern California | April 12, 2024: Montaña de Oro State Park (San Luis Obispo County, California) |
| Northern California | April 13-14, 2021: Tehama County, California |
| Southern California | April 13, 2023: San Bernardino County & the Kingston Range (Southeastern California) |
| Southern California | April 13, 2024: Oso Flaco Lake & Oceano Dunes (San Luis Obispo County, California) |
| Northern California | April 14, 2019: Henry Coe State Park (Santa Clara County, California) |
| Southern California | April 14-15, 2023: Death Valley National Park (Inyo County, California) |
| Northern California | April 14, 2024: Garland Ranch Regional Park (Monterey County, California) |
| Western Oregon | April 7 & 15, 2016: Camassia Natural Area (West Linn, Oregon) |
| Southwestern Oregon | April 15, 2021: Eight Dollar Mountain & Days Gulch (Josephine County, Oregon) |
| Columbia Gorge (East) | April 16, 2015: Columbia Hills, Klickitat County, Washington |
| Columbia Gorge (East) | April 16 & 29, 2017: Columbia Hills State Park (Klickitat County, Washington) |
| Oregon Coast | April 16-17, 2021: Northern California & Southern Oregon Coast |
| Northern California | April 16, 2024: Berryessa-Knoxville Road (Napa County, California) |
| Central Oregon | April 17, 2020: White River Wildlife Area & Deschutes River (Wasco County, Oregon) |
| Northern California | April 17, 2023: North Table Mountain (Butte County, California) |
| Western Oregon | April 17, 2024: North Bank of the North Umpqua River (Douglas County, Oregon) |
| Columbia Gorge (East) | April 18, 2014: Catherine Creek, Dalles Mountain Road, & Rowena Plateau (Columbia River Gorge, Washington & Oregon) |
 | Central & Eastern Washington | April 18-20, 2016: Central Washington |
| Southwestern Oregon | April 18, 2018: Lower Table Rock (Jackson County, Oregon) |
| Northern California | April 18, 2023: Bear Valley (Colusa County, California) |
| Columbia Gorge (West) | April 19, 2006: Dog Mountain (Columbia River Gorge, Washington) |
| Southwestern Oregon | April 19, 2018: Rough & Ready Creek (Josephine County, Oregon) |
| Southwestern Oregon | April 19, 2018: Jacksonville Woodlands (Jacksonville, Oregon) |
| Columbia Gorge (East) | April 19, 2021: Columbia Hills State Park (Klickitat County, Washington) |
| Northern California | April 19, 2023: Upper Bidwell Park (Chico, California) |
| Southwestern Oregon | April 20, 2018: Illinois River Valley (Josephine County, Oregon) |
| Northern California | April 20, 2023: Vina Plains Preserve & Big Chico Creek Ecological Reserve (Northern California) |
| Columbia Gorge (East) | April 21, 2013: Columbia Hills, Horsethief Butte, & Catherine Creek (Columbia River Gorge, Washington) |
| Southwestern Oregon | April 21, 2018: Cathedral Hills & Limpy Creek (Josephine County, Oregon) |
| Western Oregon | April 21, 2020: Mount Pisgah & Willow Creek Preserve (Lane County, Oregon) |
| Northern California | April 21, 2023: Hogsback Road, Clear Creek, & China Hill (Northern California) |
| Western Oregon | April 6, 22, & 30, 2019: Camassia Natural Area (West Linn, Oregon) |
| Columbia Gorge (West) | April 22 & June 6, 2021: McCord Creek & Elowah Falls (Columbia River Gorge, Oregon) |
| Columbia Gorge (East) | April 22, 2024: Columbia Hills & Catherine Creek (Klickitat County, Washington) |
| Columbia Gorge (East) | April 23, 2012: Tom McCall Preserve (Columbia River Gorge, Oregon) |
| Columbia Gorge (West) | April 23, 2019: Angel's Rest (Columbia River Gorge, Oregon) |
| Northern California | April 24, 2013: Pinnacles National Park (California) |
| Central Oregon | April 24-25, 2022: John Day River Basin (North-Central Oregon) |
| Columbia Gorge (East) | April 25, 2019: Chenoweth Tableland (Wasco County, Oregon) |
| Columbia Gorge (West) | April 25, 2019: Dog Mountain (Columbia River Gorge, Washington) |
| Columbia Gorge (East) | April 27, 2021: Catherine Creek (Columbia River Gorge, Washington) |
| Columbia Gorge (East) | April 27, 2023: Mill Creek Ridge (Wasco County, Oregon) |
| Central Oregon | April 27-28, 2024: Sorefoot Creek (Wasco County, Oregon) |
| Central Oregon | April 27, 2024: Lawrence Memorial Grassland Preserve (Wasco County, Oregon) |
| Columbia Gorge (East) | April 28, 2024: Historic Columbia River Highway State Trail (Wasco & Hood River Counties, Oregon) |
 | Rocky Mountains | April 29-30 & May 5, 2017: Northern Utah (also eastern Oregon and a bit of Idaho) |
| Columbia Gorge (East) | April 16 & 29, 2017: Columbia Hills State Park (Klickitat County, Washington) |
| Western Oregon | April 29, 2022: Liberty Hill (St. Helens, Columbia County, Oregon) |
 | Western Washington | April 29, 2022: Mima Mounds & Scatter Creek (Thurston County, Washington) |
| Columbia Gorge (East) | April 30, 2014: Swale Canyon (Klickitat County, Washington) |
| Western Oregon | April 6, 22, & 30, 2019: Camassia Natural Area (West Linn, Oregon) |
May |
| Columbia Gorge (East) | May 1, 2016: Tom McCall Preserve (Columbia River Gorge, Oregon) |
| Desert Southwest | May 1-4, 2017: Moab, Utah (and surrounding area) |
| Western Oregon | May 1, 2020: Canemah Bluff Nature Park (Oregon City, Oregon) |
| Central Oregon | May 2, 2008: Alder Springs Trail (Jefferson County, Oregon) |
| Desert Southwest | May 2, 2017: Arches National Park (Utah) |
| Western Oregon | May 2-3, 2019: Baskett Slough, Drift Creek Falls, & Yaquina Head (Oregon) |
| Western Oregon | May 2, 2023: Camassia Natural Area & Wilderness Park (West Linn, Oregon) |
| Columbia Gorge (West) | May 2, 2024: Dog Mountain & Great Camas Patch (Columbia River Gorge, Washington) |
| Desert Southwest | May 3-4, 2017: Canyonlands National Park (Utah) |
 | Eastern Oregon | May 3 & 8, 2021: Blue Mountains (Oregon) |
| Columbia Gorge (East) | May 3, 2022: Hood River Mountain & Mosier (Columbia River Gorge, Oregon) |
| Columbia Gorge (East) | May 4, 2006: Columbia Hills (Columbia River Gorge, Washington) |
| Columbia Gorge (East) | May 4, 2019: Columbia Hills State Park (Klickitat County, Washington) |
| Southwestern Oregon | May 4, 2020: Sexton Mountain & Whetstone Savanna (Southern Oregon) |
| Eastern Oregon | May 4, 2021: Succor Creek (Malheur County, Oregon) |
| Columbia Gorge (East) | May 5, 2007: Catherine Creek (Columbia River Gorge, Washington) |
| Columbia Gorge (West) | May 5, 2016: Dog Mountain (Columbia River Gorge, Washington) |
| Rocky Mountains | April 29-30 & May 5, 2017: Northern Utah (also eastern Oregon and a bit of Idaho) |
| Southwestern Oregon | May 5, 2020: Illinois Valley (Josephine County, Oregon) |
| Eastern Oregon | May 5, 2021: Three Forks (Malheur County, Oregon) |
| Columbia Gorge (East) | May 6, 2012: Memaloose Hills & Seven-Mile Hill (Columbia River Gorge, Oregon) |
| Central Oregon | May 6-7, 2017: John Day Fossil Beds & Kingston Prairie (Oregon) |
| Southwestern Oregon | May 6, 2020: East Applegate Ridge & Lost Creek Lake (Jackson County, Oregon) |
| Eastern Oregon | May 6, 2021: Leslie Gulch (Malheur County, Oregon) |
| Columbia Gorge (East) | May 6, 2023: Klickitat Wildlife Area & Glenwood Highway (Klickitat County, Washington) |
| Columbia Gorge (West) | May 7, 2015: Dog Mountain (Columbia River Gorge, Washington) |
| Minnesota | May 7, 2018: Eloise Butler Wildflower Garden (Minneapolis, Minnesota) |
| Southwestern Oregon | May 7, 2020: Pilot Rock & Hobart Bluff (Cascade-Siskiyou National Monument, Oregon) |
| Eastern Oregon | May 7, 2021: Hells Canyon (Oregon & Idaho) |
| Columbia Gorge (West) | May 8, 2018: Lacamas Creek Park (Camas, Washington) |
| Central & Eastern Washington | May 8-10, 2019: Central Washington |
| Southwestern Oregon | May 8, 2020: Kerby Flat & Illinois River Road (Josephine County, Oregon) |
| Eastern Oregon | May 3 & 8, 2021: Blue Mountains (Oregon) |
| Central & Eastern Washington | May 8, 2024: Saddle Mountains (Benton County, Washington) |
| Central & Eastern Washington | May 8, 2024: White Bluffs, Hanford Reach National Monument (Washington) |
| Central & Eastern Washington | May 9, 2023: Tri-Cities: Wallula Gap, Badger Mountain, & Horse Heaven Hills (Washington) |
| Central & Eastern Washington | May 9, 2024: Rattlesnake Slope & Horn Rapids Park (Benton Counties, Washington) |
| Columbia Gorge (West) | May 10, 2013: Hamilton Mountain (Columbia River Gorge, Washington) |
| Eastern Oregon | May 10, 2022: Succor Creek & Owyhee River (Malheur County, Oregon) |
| Central & Eastern Washington | May 10, 2023: Yakima Canyon: Mount Baldy & Umtanum Creek Canyon (Kittitas County, Washington) |
| Central & Eastern Washington | May 10, 2024: Columbia River roadsides (Benton & Klickitat Counties, Washington) |
| Columbia Gorge (West) | May 11, 2005: Dog Mountain (Columbia River Gorge, Washington) |
| Columbia Gorge (East) | May 11, 2009: Columbia Hills (Columbia River Gorge, Washington) |
| Northern California | May 11-12, 2018: El Dorado County, California |
| Central & Eastern Washington | May 11, 2019: Leidl Ridge (Klickitat Wildlife Area, Washington) |
| Eastern Oregon | May 11, 2022: Olds Ferry Road (Washington County, Idaho) |
| Central & Eastern Washington | May 11, 2023: Vantage Highway (Kittitas & Grant Counties, Washington) |
| Columbia Gorge (West) | May 11, 2024: McCord Creek & Elowah Falls (Columbia River Gorge, Oregon) |
| Columbia Gorge (West) | May 12, 2016: Cook Hill (Columbia River Gorge, Washington) |
| Eastern Oregon | May 12, 2022: Boise Front (Ada County, Idaho) |
| Central & Eastern Washington | May 12, 2023: Tieton River (Yakima County, Washington) |
| Columbia Gorge (West) | May 13, 2012: Munra Point (Columbia River Gorge, Oregon) |
| Western Oregon | May 13, 2014: Horse Rock Ridge (Linn County, Oregon) |
| Western Oregon | May 13, 2021: Saddle Mountain (Coast Range, Clatsop County, Oregon) |
| Eastern Oregon | May 13, 2022: Blue Mountains (Umatilla County, Oregon) |
| Western Oregon | May 14, 2014: Mount Pisgah (Lane County, Oregon) |
| Columbia Gorge (East) | May 15, 2010: Hood River Mountain (Columbia River Gorge, Oregon) |
| Central Oregon | May 15-16, 2024: Whychus Creek & Deschutes River (Central Oregon) |
| Columbia Gorge (East) | May 16, 2014: Catherine Creek (Columbia River Gorge, Washington) |
| Southwestern Oregon | May 16-19, 2016: Central & Southern Oregon |
| Cascade Range | May 16, 2024: Camas Prairie (Mt. Hood National Forest, Oregon) |
| Columbia Gorge (West) | May 17, 2007: Dog Mountain (Columbia River Gorge, Washington) |
| Oregon Coast | May 17, 2018: Angora Peak (Clatsop County, Oregon) |
| Central & Eastern Washington | May 17, 2021: Tieton River & Oak Creek Wildlife Area (Yakima County, Washington) |
| Columbia Gorge (East) | May 18, 2011: Catherine Creek & Columbia Hills (Columbia River Gorge, Washington) |
| Columbia Gorge (West) | May 18, 2012: Dog Mountain (Columbia River Gorge, Washington) |
| Central & Eastern Washington | May 18, 2021: Snow Mountain Ranch & Edgar Rock (Yakima County, Washington) |
| Columbia Gorge (West) | May 18, 2023: Hamilton Mountain (Beacon Rock State Park, Washington) |
| Central Oregon | May 19, 2017: Cottonwood Canyon State Park & Seven-Mile Hill (Oregon) |
| Central & Eastern Washington | May 19, 2021: Camas Meadows & Forest Road 7200 (Chelan County, Washington) |
| Columbia Gorge (West) | May 20, 2013: Dog Mountain (Columbia River Gorge, Washington) |
| Columbia Gorge (East) | May 20, 2020: Brooks Memorial State Park, Klickitat Wildlife Area, & Swale Creek Wildlife Area (Washington) |
| Columbia Gorge (East) | May 20, 2021: Klickitat County roadsides (Washington) |
| Columbia Gorge (West) | May 20, 2022: Eagle Creek (Columbia River Gorge, Oregon) |
| Southwestern Oregon | May 21-22, 2024: Days Gulch Botanical Area (Josephine County, Oregon) |
| Southwestern Oregon | May 21, 2024: Eight Dollar Mountain (Josephine County, Oregon) |
| Columbia Gorge (West) | May 22, 2014: Eagle Creek (Columbia River Gorge, Oregon) |
| Western Oregon | May 22, 2017: Finley National Wildlife Refuge & Mary's Peak (Oregon) |
| Columbia Gorge (West) | May 23, 2018: Archer Mountain (Columbia River Gorge, Washington) |
| Cascade Range | May 23, 2020: Nestor Peak (Klickitat County, Washington) |
| Southwestern Oregon | May 23, 2024: Bald Mountain (Jackson County, Oregon) |
| Southwestern Oregon | May 24, 2024: Baldy Peak (Jackson County, Oregon) |
 | Sierra Nevada | May 25, 2015: Hetch Hetchy & Stanislaus National Forest (California) |
| Central Oregon | May 25, 2022: Deschutes River (Wasco County & Jefferson County, Oregon) |
| Columbia Gorge (West) | May 25, 2023: Dog Mountain (Columbia River Gorge, Washington) |
| Sierra Nevada | May 26, 2015: Yosemite Valley & South Rim (Yosemite National Park) |
| Oregon Coast | May 26, 2021: Mount Hebo (Coast Range, Oregon) |
| Columbia Gorge (West) | May 27, 2012: Rock of Ages Arch & Oneonta Creek (Columbia River Gorge, Oregon) |
| Sierra Nevada | May 27, 2015: Tuolumne Meadows & Tioga Pass, (Yosemite National Park) |
| Central Oregon | May 27-30, 2019: Central Oregon |
| Oregon Coast | May 27, 2020: Central Oregon Coast: Cape Perpetua, Florence, and Yachats |
| Cascade Range | May 28, 2005: Mirror Lake & Tom Dick and Harry (Mt. Hood National Forest, Oregon) |
| Sierra Nevada | May 28, 2015: Mammoth Lakes area (California) |
 | Western Cascades | May 28-30, 2016: North Umpqua River (Oregon) |
| Cascade Range | May 28, 2023: Mitchell Point & Bald Butte (Mt. Hood National Forest, Oregon) |
| Columbia Gorge (West) | May 29, 2012: Table Mountain (Columbia River Gorge, Washington) |
| Sierra Nevada | May 29, 2015: Eastern Sierra Nevada: Mono Lake & Sonora Pass (California) |
| Cascade Range | May 30, 2018: Surveyor's Ridge & Lookout Mountain (Mt. Hood National Forest, Oregon) |
| Oregon Coast | May 30 - June 2, 2022: Central Oregon Coast (Lincoln County) |
| Western Oregon | May 30, 2022: Finley National Wildlife Refuge (Oregon) |
| Central Oregon | May 30, 2024: Tygh Creek & Jordan Butte (Mt. Hood National Forest, Oregon) |
| Western Oregon | May 31, 2014: Elk Mountain & Kings Mountain (Tillamook State Forest, Oregon) |
June |
| Central Oregon | June 1, 2023: Smith Rock State Park (Deschutes County, Oregon) |
| Cascade Range | June 2, 2007: Larch Mountain, Oregon |
| Columbia Gorge (West) | June 2, 2008: Dog Mountain (Columbia River Gorge, Washington) |
| Eastern Oregon | June 2, 2021: School Canyon Trail (Badger Creek Wilderness, Oregon) |
| Eastern Oregon | June 2, 2023: Oregon Badlands, Pine Mountain, & Crooked River Highway (Central Oregon) |
| Columbia Gorge (West) | June 3, 2019: Wahkeena Falls & Multnomah Falls (Columbia River Gorge, Oregon) |
| Western Cascades | June 3, 2020: Rooster Rock & Table Rock (Table Rock Wilderness, Oregon) |
| Central Oregon | June 3, 2021: Big Summit Prairie (Ochoco National Forest, Oregon) |
| Eastern Oregon | June 4, 2021: Lookout Mountain (Ochoco National Forest, Oregon) |
| Columbia Gorge (West) | June 5, 2017: Dog Mountain (Columbia River Gorge, Washington) |
| Central Oregon | June 5, 2021: Northern Deschutes County & Tombstone Prairie (Oregon) |
| Central & Eastern Washington | June 5-7, 2023: Wenatchee Mountains (Kittitas & Chelan Counties, Washington) |
| Central & Eastern Washington | June 5, 2024: Mills Creek Canyon & Keystone Point (Chelan County, Washington) |
| Cascade Range | June 6, 2013: Mirror Lake & Tom Dick and Harry Mountain (Mt. Hood National Forest, Oregon) |
| Western Cascades | June 6-7, 2014: Opal Creek & Opal Lake (Willamette National Forest, Oregon) |
| Central Oregon | June 6-8, 2017: Central Oregon |
| Columbia Gorge (West) | April 22 & June 6, 2021: McCord Creek & Elowah Falls (Columbia River Gorge, Oregon) |
| Central & Eastern Washington | June 6, 2024: Chumstick Mountain (Chelan County, Washington) |
| Cascade Range | June 7, 2015: Mirror Lake & Tom Dick and Harry Mountain (Mt. Hood National Forest, Oregon) |
| Cascade Range | June 7, 2016: Grassy Knoll (Gifford Pinchot National Forest, Washington) |
| Eastern Oregon | June 7, 2022: Little Summit Prairie (Crook County, Oregon) |
| Central & Eastern Washington | June 7, 2024: Tumwater Canyon (Chelan County, Washington) |
| Central & Eastern Washington | June 7, 2024: Sugarloaf Peak (Chelan County, Washington) |
| Eastern Oregon | June 8, 2022: Alvord Desert & surrounding area (Harney County, Oregon) |
| Eastern Oregon | June 9, 2022: Pueblo Mountains (Harney County, Oregon) |
| Central & Eastern Washington | June 10, 2019: Earl Peak & Bean Peak (Wenatchee Mountains, Washington) |
| Central Oregon | June 10, 2020: White River Falls, Deschutes River, Postage Stamp Butte, & Bottle Prairie (Wasco & Hood River Counties, Oregon) |
| Western Oregon | June 10, 2021: Horse Rock Ridge & Kingston Prairie (Linn County, Oregon) |
| Eastern Oregon | June 10, 2022: Diamond Craters (Harney County, Oregon) |
| Eastern Oregon | June 10, 2022: South Steens Mountain Loop Road (Harney County, Oregon) |
| Western Oregon | June 11, 2006: Saddle Mountain (Coast Range, Clatsop County, Oregon) |
| Western Oregon | June 11, 2015: Saddle Mountain (Coast Range, Clatsop County, Oregon) |
| Central & Eastern Washington | June 11, 2019: Tronsen Ridge (Wenatchee Mountains, Washington) |
| Eastern Oregon | June 11, 2022: Summit Prairie & Logan Valley (Grant County, Oregon) |
| Western Cascades | June 11-12, 2024: Bachelor Mountain & Quartzville Creek (Willamette National Forest, Oregon) |
| Western Oregon | June 12, 2016: Saddle Mountain (Coast Range, Clatsop County, Oregon) |
| Western Cascades | June 12, 2018: Dome Rock & Sardine Mountain (Willamette National Forest, Oregon) |
| Central & Eastern Washington | June 12, 2019: Brooks Memorial State Park (Klickitat County, Washington) |
| Central & Eastern Washington | June 12-13, 2023: Snake River, Rogersburg, & Couse Creek (Asotin County, Washington) |
| Central & Eastern Washington | June 13-14, 2023: Anatone Butte, Wickiup Spring, & Diamond Peak (Asotin & Garfield Counties, Washington) |
| Central & Eastern Washington | June 13, 2023: Puffer Butte, Fields Spring State Park (Asotin County, Washington) |
| Columbia Gorge (West) | June 14, 2013: Munra Point (Columbia River Gorge, Oregon) |
| Central & Eastern Washington | June 14-15, 2023: Kendall Skyline Road, Godman Springs, & Sawtooth Ridge (Columbia County, Washington) |
| Columbia Gorge (West) | June 15, 2022: Wind Mountain & Dog Creek Falls (Columbia River Gorge, Washington) |
| Western Washington | June 17, 2006: Silver Star Mountain (Gifford Pinchot National Forest, Washington) |
| Columbia Gorge (West) | June 17, 2011: Elowah Falls & Upper McCord Creek Falls (Columbia River Gorge, Oregon) |
| Oregon Coast | June 17, 2019: Cascade Head & God's Thumb (Oregon Coast) |
| Western Oregon | June 17, 2020: Elk Mountain & Kings Mountain (Tillamook State Forest, Oregon) |
| Cascade Range | June 17, 2021: Grassy Knoll (Gifford Pinchot National Forest, Washington) |
| Cascade Range | June 18, 2015: Vista Ridge to Eden Park (Mt. Hood Wilderness, Oregon) |
| Western Oregon | June 18, 2016: Baskett Slough N.W.R. (Polk County, Oregon) |
| Central Oregon | June 18, 2024: Stein's Pillar & western Ochoco Mountains (Ochoco National Forest, Oregon) |
| Oregon Coast | June 19, 2007: Neahkahnie Mountain, Oregon |
| Cascade Range | June 19, 2018: Truman Trail to Loowit Falls (Mt. St. Helens, Washington) |
| Eastern Oregon | June 19, 2024: Domingo Pass (Pueblo Mountains, Harney County, Oregon) |
| Klamath Mountains & N California | June 20, 2023: Gunsight-Humbug Ridge & Ash Creek (Siskiyou County, California) |
| Eastern Oregon | June 20, 2024: Hot Springs in SE Oregon & NW Nevada |
| Oregon Coast | June 21-22, 2011: Cannon Beach & Neahkahnie Mountain (Oregon) |
| Columbia Gorge (West) | June 21, 2011: Angel's Rest (Columbia River Gorge, Oregon) |
| Columbia Gorge (West) | June 21, 2012: Hardy Ridge (Columbia River Gorge, Washington) |
| Klamath Mountains & N California | June 21-22, 2014: Glass Mountain & Northeastern California |
| Western Washington | June 21, 2016: Silver Star Mountain (Gifford Pinchot National Forest, Washington) |
| Southwestern Oregon | June 21-23, 2017: Rogue River Valley (Oregon) |
| Klamath Mountains & N California | June 21-22, 2020: Gunsight-Humbug Ridge, Scott Mountain Summit, & Kangaroo Lake (Klamath National Forest, California) |
| Southwestern Oregon | June 21, 2023: Grizzly Peak (Jackson County, Oregon) |
| Eastern Oregon | June 21, 2024: Pike Creek Canyon (Steens Mountain Wilderness, Oregon) |
| Oregon Coast | June 22, 2008: Cascade Head (Oregon Coast) |
| Western Washington | June 22, 2013: Silver Star Mountain (Gifford Pinchot National Forest, Washington) |
| Sierra Nevada | June 22, 2014: Bayview Trail to Maggie's Peaks (Lake Tahoe, California) |
| Western Cascades | June 22, 2016: Cone Peak & Iron Mountain (Willamette National Forest, Oregon) |
| Klamath Mountains & N California | June 22, 2020: Taylor Lake & Etna Summit, Salmon Mountains (Klamath National Forest, California) |
| Western Cascades | June 22, 2022: Eagle's Rest & Mount June (Lane County, Oregon) |
| Klamath Mountains & N California | June 22, 2023: Redwoods National Park (Del Norte County, California) |
| Klamath Mountains & N California | June 22, 2023: Wimer Road & Del Norte County (Oregon & California) |
| Western Cascades | June 22, 2024: Echo Basin, Echo Mountain, & Cone Peak (Willamette National Forest, Oregon) |
| Western Washington | June 23, 2009: Silver Star Mountain (Gifford Pinchot National Forest, Washington) |
| Sierra Nevada | June 23, 2014: Shirley Canyon, Squaw Valley (Lake Tahoe, California) |
| Klamath Mountains & N California | June 23-24, 2020: Big Red Mountain, Dutchman Peak, & McDonald Peak (Siskiyou Mountains, Oregon) |
| Cascade Range | June 23-24, 2021: Wenatchee Mountains (Kittitas County, Washington) |
| Western Cascades | June 23, 2022: Tire Mountain (Lane County, Oregon) |
| Southwestern Oregon | June 23-24, 2023: Illinois Valley (Josephine County, Oregon) |
| Southwestern Oregon | June 23, 2023: Forest Road 4201 & Kalmiopsis Rim (Josephine & Curry Counties, Oregon) |
| Sierra Nevada | June 24, 2014: Carson Pass & Round Top (Mokelumne Wilderness, California) |
 | Olympic Peninsula | June 24-25, 2015: Olympic National Park (Washington) |
| Western Washington | June 24, 2019: Silver Star Mountain (Gifford Pinchot National Forest, Washington) |
| Southwestern Oregon | June 24, 2020: Boccard Point (Cascade-Siskiyou National Monument, Oregon) |
| Western Cascades | June 24, 2022: Nevergo Meadow & Elk Camp Meadow (Lane County, Oregon) |
| Columbia Gorge (West) | June 25, 2005: Angel's Rest (Columbia River Gorge, Oregon) |
| Cascade Range | June 25-26, 2006: McKenzie River & Cone Peak/Iron Mountain (Willamette National Forest, Oregon) |
| Sierra Nevada | June 25, 2014: Pyramid Creek & Horsetail Falls (California) |
| Klamath Mountains & N California | June 25, 2020: Cook & Green Pass (Klamath Mountains, California) |
| Sierra Nevada | June 26, 2014: Glen Alpine to Lake Aloha (Desolation Wilderness, California) |
| Sierra Nevada | June 27-28, 2014: Northeastern California |
| Western Cascades | June 27-28, 2018: Western Cascades (Willamette National Forest, Oregon) |
| Central & Eastern Washington | June 27, 2022: Conboy Lake N.W.R. & Brooks Memorial State Park (Klickitat County, Washington) |
| Cascade Range | June 27, 2024: Thunder & Lightning Lakes (Okanogan-Wenatchee National Forest, Washington) |
| Klamath Mountains & N California | June 28, 2012: Castle Crags (Shasta County, California) |
| Western Oregon | June 28, 2013: Saddle Mountain (Coast Range, Clatsop County, Oregon) |
| Cascade Range | June 28, 2024: Ironstone Mountain (Okanogan-Wenatchee National Forest, Washington) |
| Klamath Mountains & N California | June 29 - July 2, 2012: Mt. Lassen & vicinity, California |
| Western Washington | June 29, 2017: Silver Star Mountain (Gifford Pinchot National Forest, Washington) |
| Klamath Mountains & N California | June 29, 2021: Mount Ashland & Siskiyou Peak (Jackson County, Oregon) |
| Cascade Range | June 30, 2015: Canyon Creek Meadows & Three-Fingered Jack (Mt. Jefferson Wilderness, Oregon) |
| Klamath Mountains & N California | June 30, 2021: Mt. Elijah & Bigelow Lakes (Oregon Caves National Preserve) |
| Western Washington | June 30, 2023: Silver Star Mountain (Gifford Pinchot National Forest, Washington) |
July |
| Columbia Gorge (West) | July 1, 2010: Summit Creek Falls (Columbia River Gorge, Oregon) |
| Klamath Mountains & N California | July 1, 2021: Whisky Peak & Hinkle Lake (Rogue River-Siskiyou National Forest) |
| Cascade Range | July 1, 2022: Three Corner Rock (Skamania County, Washington) |
| Central Oregon | July 2-3, 2006: Sisters & Smith Rock (Oregon) |
| Western Oregon | July 2, 2011: Saddle Mountain (Coast Range, Clatsop County, Oregon) |
| Cascade Range | July 2, 2016: McNeil Point (Mt. Hood Wilderness, Oregon) |
| Western Cascades | July 2-3, 2024: Western Cascades (Willamette National Forest, Oregon) |
| Columbia Gorge (West) | July 3, 2017: Hamilton Mountain (Columbia River Gorge, Washington) |
| Western Cascades | July 3, 2019: Coffin Mountain & Bachelor Mountain (Willamette National Forest, Oregon) |
| Cascade Range | July 3, 2020: Boulder Lake/Bonney Meadows & Tygh Creek Trail (Mt. Hood National Forest, Oregon) |
| Klamath Mountains & N California | July 5, 2016: Pilot Rock, Cascade-Siskiyou National Monument (Oregon) |
| Cascade Range | July 5, 2021: Vista Ridge to Barrett Spur (Mt. Hood Wilderness, Oregon) |
| Eastern Oregon | July 5-6, 2022: Hager Mountain & Winter Ridge (Lake County, Oregon) |
| Eastern Oregon | July 5, 2022: Fort Rock (Lake County, Oregon) |
| Olympic Peninsula | July 5, 2023: Mount Angeles (Olympic National Park, Washington) |
| Cascade Range | July 6, 2013: Mt. Hood Meadows & Newton Creek (Mt. Hood National Forest, Oregon) |
| Klamath Mountains & N California | July 6, 2016: Clear Creek Trail, Mt. Shasta (California) |
| Klamath Mountains & N California | July 6, 2016: Castle Crags & the Shasta-Trinity Divide (California) |
| Eastern Oregon | July 6-7, 2022: Twelvemile Peak & Mud Creek Spring, North Warner Mountains (Lake County, Oregon) |
| Olympic Peninsula | July 6, 2023: Obstruction Point Road: Eagle Point, Elk Mountain, & Badger Valley (Olympic National Park, Washington) |
| Cascade Range | July 7-8, 2015: Paradise & Summerland (Mt. Rainier National Park, Washington) |
| Cascade Range | July 7, 2018: Mount Aix (Wenatchee National Forest, Washington) |
| Eastern Oregon | July 7, 2022: Hart Mountain National Antelope Refuge (Lake County, Oregon) |
| Olympic Peninsula | July 7, 2023: Blue Mountain & Deer Park (Olympic National Park, Washington) |
| Cascade Range | July 8, 2014: Sunrise Peak & Jumbo Peak (Dark Divide, Washington) |
| Klamath Mountains & N California | July 8, 2016: Deadfall Meadows, Shasta-Trinity National Forest (California) |
| Cascade Range | July 8, 2017: Vista Ridge to Barrett Spur (Mt. Hood Wilderness, Oregon) |
| Western Cascades | July 8, 2020: Nasty Rock & Not Nasty Rock (Western Cascades, Oregon) |
| Western Cascades | July 8, 2022: Parish Lake, Middle Pyramid, & Park Creek Basin (Linn County, Oregon) |
| Cascade Range | July 8, 2022: Multorpor Fen (Mt. Hood National Forest, Oregon) |
| Cascade Range | July 9, 2005: Cooper Spur (Mt. Hood Wilderness, Oregon) |
| Cascade Range | July 9, 2006: Bald Mountain & McNeil Point (Mt. Hood Wilderness, Oregon) |
| Columbia Gorge (West) | July 9, 2011: Hamilton Mountain (Columbia River Gorge, Washington) |
| Eastern Oregon | July 9, 2021: Aldrich Mountain (Malheur National Forest, Oregon) |
| Cascade Range | July 10, 2007: McNeil Point (Mt. Hood, Oregon) |
| Central Oregon | July 10, 2018: Ochoco Mountains (Central Oregon) |
| Cascade Range | July 10, 2020: McNeil Point (Mt. Hood Wilderness, Oregon) |
| Eastern Oregon | July 10, 2021: Vinegar Hill (Malheur National Forest, Oregon) |
| Central & Eastern Washington | July 10, 2024: Esmeralda Basin & Small Fortune Peak (Wenatchee Mountains, Washington) |
| Cascade Range | July 11, 2013: Three-Fingered Jack (Mt. Jefferson Wilderness, Oregon) |
| Eastern Oregon | July 11, 2018: Strawberry Mountain (Malheur National Forest, Oregon) |
| Eastern Oregon | July 11, 2021: Twin Lakes & Rock Creek Butte (Elkhorn Mountains, Oregon) |
| Cascade Range | July 11, 2023: Gold Lake Bog & Waldo Lake (Willamette National Forest, Oregon) |
| Central & Eastern Washington | July 11, 2024: Mount Lillian, Naneum Meadows, & Table Mountain (Wenatchee Mountains, Washington) |
| Eastern Oregon | July 12, 2021: Strawberry Mountain (Malheur National Forest, Oregon) |
| Western Cascades | July 12, 2023: Youngs Rock, Moon Point, & Warner Mountain (Lane County, Oregon) |
| Central & Eastern Washington | July 12, 2024: Mission Peak (Wenatchee Mountains, Washington) |
| Rocky Mountains | July 13, 2018: Lofty Lake Loop (Uinta Mountains, Utah) |
| Cascade Range | July 13, 2019: Mt. McLoughlin (Sky Lakes Wilderness, Oregon) |
| Central Oregon | July 13, 2021: Painted Hills, Bandit Spring, & Grizzly Mountain (Central Oregon) |
| Cascade Range | July 14, 2005: McNeil Point (Mt. Hood Wilderness, Oregon) |
| Cascade Range | July 14-20, 2011: Crater Lake & Northern California |
| Olympic Peninsula | July 14, 2022: Mount Townsend (Olympic National Forest, Washington) |
| Cascade Range | July 15, 2015: Goat Rocks Wilderness (Gifford Pinchot National Forest, Washington) |
| Rocky Mountains | July 15, 2018: Albion Basin & Devil's Castle (Wasatch Mountains, Utah) |
| Eastern Oregon | July 15, 2020: Fields Peak (Malheur National Forest, Oregon) |
| Cascade Range | July 16, 2016: Lookout Mountain (Badger Creek Wilderness, Oregon) |
| Eastern Oregon | July 16, 2020: Anthony Lakes & Elkhorn Crest (Wallowa-Whitman National Forest, Oregon) |
| Cascade Range | July 16, 2021: Lookout Mountain (Badger Creek Wilderness, Oregon) |
| Eastern Oregon | July 16-19, 2024: Blue Mountains (Wallowa-Whitman National Forest, Oregon) |
| Western Washington | July 17, 2010: Silver Star Mountain (Gifford Pinchot National Forest, Washington) |
| Western Washington | July 17, 2012: Silver Star Mountain (Gifford Pinchot National Forest, Washington) |
| Cascade Range | July 17, 2014: McNeil Point & Barrett Spur (Mt. Hood Wilderness, Oregon) |
| Olympic Peninsula | July 17, 2017: Hurricane Hill (Olympic National Park, Washington) |
| Rocky Mountains | July 17, 2018: Timpooneke Trail to Mt. Timpanogos (Wasatch Mountains, Utah) |
| Eastern Oregon | July 17, 2020: Dixie Butte & Forest Road 18 (Malheur National Forest, Oregon) |
| Olympic Peninsula | July 18, 2017: Obstruction Point (Olympic National Park, Washington) |
| Cascade Range | July 18, 2023: Burnt Mountain, Shellrock Peak, & Cash Prairie (William O. Douglas Wilderness, Washington) |
| Eastern Oregon | July 18, 2024: Mt. Howard & East Peak (Wallowa Mountains, Oregon) |
| Olympic Peninsula | July 19, 2017: Hoh Rain Forest & Pacific Beaches (Olympic National Park, Washington) |
| Rocky Mountains | July 19, 2018: Deseret Peak (Stansbury Mountains, Utah) |
| Cascade Range | July 19, 2023: Windy Ridge & the Loowit Trail (Mt. St. Helens National Volcanic Monument, Washington) |
| Cascade Range | July 20, 2006: Pinnacle Ridge Trail (Mt. Hood Wilderness, Oregon) |
| Rocky Mountains | July 20, 2018: Mt. Nebo Scenic Byway (Wasatch Mountains, Utah) |
| Central Oregon | July 20, 2019: Central Oregon: Gray Butte & Crooked River Highway |
| Central & Eastern Washington | July 20-21, 2022: Tiffany Mountain & Tiffany Highlands (Okanogan-Wenatchee National Forest, Washington) |
| Cascade Range | July 21, 2012: McNeil Point (Mt. Hood Wilderness, Oregon) |
| Eastern Oregon | July 21, 2019: Steens Mountain (Harney County, Oregon) |
| Cascade Range | July 22, 2013: Snow Lake & Gem Lake (Alpine Lakes Wilderness, Washington) |
| Rocky Mountains | July 22, 2018: Silver Meadow & Bald Mountain (Uinta Mountains, Utah) |
| Rocky Mountains | July 22, 2018: Silver Lake & Twin Lake (Wasatch Mountains, Utah) |
| Rocky Mountains | July 22, 2019: Lamoille Canyon (Ruby Mountains, Nevada) |
| Cascade Range | July 22, 2021: Grand Park & Berkeley Park (Mt. Rainier National Park, Washington) |
| Cascade Range | July 22, 2022: Harts Pass & Tatie Peak (Okanogan-Wenatchee National Forest, Washington) |
| Cascade Range | July 22, 2023: Tatoosh Range (Mt. Rainier National Park, Washington) |
| Cascade Range | July 23, 2005: Timberline Lodge (Oregon) |
| Western Washington | July 23, 2008: Silver Star Mountain (Gifford Pinchot National Forest, Washington) |
| Cascade Range | July 23, 2010: McNeil Point (Mt. Hood Wilderness, Oregon) |
| Western Oregon | July 23, 2020: Browder Ridge (Western Cascades, Oregon) |
| Rocky Mountains | July 24, 2018: Sawtooth Lake & Alpine Peak (Sawtooth Mountains, Idaho) |
| Rocky Mountains | July 24, 2019: Mesa Verde National Park (Colorado) |
| Cascade Range | July 24, 2024: Wetlands south of Mount Hood (Mt. Hood National Forest, Oregon |
| Cascade Range | July 25, 2014: Snoqualmie Pass to Kendall Katwalk (Alpine Lakes Wilderness, Washington) |
| Rocky Mountains | July 25-30, 2016: Glacier National Park (Montana) |
| Rocky Mountains | July 25, 2019: Kennebec Pass, La Plata Mountains (Colorado) |
| Cascade Range | July 26, 2005: Burnt Lake (Mt. Hood National Forest, Oregon) |
| Cascade Range | July 26, 2006: Paradise Park (Mt. Hood Wilderness, Oregon) |
| Cascade Range | July 26, 2007: Cooper Spur (Mt. Hood, Oregon) |
| Rocky Mountains | July 26, 2019: Sharkstooth Pass & San Juan Skyway (Colorado) |
| Cascade Range | July 26, 2023: Paradise Park & Mississippi Head (Mt. Hood Wilderness, Oregon) |
| Cascade Range | July 27-28, 2013: Mt. Thielsen & Diamond Lake, Oregon |
| Rocky Mountains | July 27, 2019: Telluride Valley & Bridal Veil Falls (Colorado) |
| Western Oregon | July 27, 2024: Saddle Mountain (Coast Range, Clatsop County, Oregon) |
| Cascade Range | July 28, 2012: Barrett Spur (Mt. Hood Wilderness, Oregon) |
| Rocky Mountains | July 28, 2019: Black Canyon of the Gunnison National Park & Colorado National Monument |
| Cascade Range | July 29-30, 2017: Vesper Peak & Mt. Pilchuck (North Cascades, Washington) |
| Rocky Mountains | July 29, 2019: Grand Mesa National Forest (Colorado) |
| Olympic Peninsula | July 29, 2020: Lake of the Angels (Olympic National Park, Washington) |
| Olympic Peninsula | July 29, 2021: Marmot Pass & Buckhorn Mountain (Olympic National Forest, Washington) |
| Oregon Coast | July 29, 2022: Angora Peak (Clatsop County, Oregon) |
| Western Oregon | July 30, 2005: Saddle Mountain (Coast Range, Clatsop County, Oregon) |
| Cascade Range | July 30-31, 2011: McNeil Point (Mt. Hood, Oregon) |
| Cascade Range | July 30, 2015: Rachel Lake & Alta Mountain (Alpine Lakes Wilderness, Washington) |
| Rocky Mountains | July 30, 2019: Kebler Pass & Crested Butte (Colorado) |
| Cascade Range | July 31, 2009: Gnarl Ridge (Mt. Hood Wilderness, Oregon) |
| Rocky Mountains | July 31, 2016: Leigh Lake (Cabinet Mountains, Montana) |
| Rocky Mountains | July 31, 2019: Dinosaur National Monument (Utah) |
| Olympic Peninsula | July 31, 2024: Mount Ellinor (Olympic National Forest, Washington) |
August |
| Cascade Range | August 1, 2023: Ptarmigan Ridge (Mt. Baker Wilderness, Washington) |
| Cascade Range | August 2, 2007: Jefferson Park, Oregon |
| Cascade Range | August 2, 2014: Cady Ridge (Wenatchee National Forest, Washington) |
| Cascade Range | August 2, 2023: Lake Ann (Mt. Baker Wilderness, Washington) |
| Western Washington | August 3, 2011: Silver Star Mountain (Gifford Pinchot National Forest, Washington) |
| Cascade Range | August 3, 2013: Johnston Ridge (Mount St. Helens National Volcanic Monument, Washington) |
| Western Cascades | August 3-4, 2022: Calapooya Mountains (Umpqua National Forest, Lane County & Douglas County, Oregon) |
| Cascade Range | August 3, 2023: Winchester Mountain (Mt. Baker-Snoqualmie National Forest, Washington) |
| Cascade Range | August 4, 2005: Cathedral Ridge (Mt. Hood Wilderness, Oregon) |
| Cascade Range | August 4, 2006: Bird Creek Meadows, Mt. Adams (Yakama Reservation, Washington) |
| Cascade Range | August 4, 2009: McNeil Point (Mt. Hood Wilderness, Oregon) |
| Cascade Range | August 4, 2017: Cloud Cap to Gnarl Ridge (Mt. Hood Wilderness, Oregon) |
| Sierra Nevada | August 4, 2020: Tahoe Meadows (Humboldt-Toiyabe National Forest, Nevada) |
| Sierra Nevada | August 5, 2020: Horseshoe Meadows (Inyo National Forest, California) |
| Cascade Range | August 5, 2021: Paradise, Mt. Rainier National Park (Washington) |
| Cascade Range | August 5, 2024: Trout Lake Natural Area Preserve (Klickitat County, Washington) |
| Cascade Range | August 6, 2013: Paradise & Pinnacle Peak (Mt. Rainier National Park, Washington) |
| Cascade Range | August 6, 2016: Ape Canyon & Lava Canyon (Mt. St. Helens National Volcanic Monument, Washington) |
| Cascade Range | August 6, 2018: Chain Lakes Trail & Artist Point (Mt. Baker, Washington) |
| Cascade Range | August 6, 2019: Mowich Lake to Spray Park (Mt. Rainier National Park, Washington) |
| Sierra Nevada | August 6, 2020: Mount Whitney (Inyo National Forest, California) |
| Cascade Range | August 6, 2024: South Butte, Mt. Adams (Gifford Pinchot National Forest, Washington) |
| Cascade Range | August 7-9, 2018: Squamish (British Columbia, Canada) |
| Sierra Nevada | August 7, 2020: Eastern Sierra Nevada, California |
| Sierra Nevada | August 8, 2020: Thunder Mountain Trail (Squaw Valley, California) |
| Cascade Range | August 9, 2007: South Sister (Three Sisters Wilderness, Oregon) |
| Cascade Range | August 9, 2012: Sunset at Zigzag Canyon (Mt. Hood National Forest, Oregon) |
| Western Cascades | August 9-10, 2014: McKenzie River (Willamette National Forest, Oregon) |
| Cascade Range | August 9-10, 2017: Chinook Pass & Paradise (Mt. Rainier National Park, Washington) |
| Eastern Oregon | August 9, 2023: Steens Mountain: North Road & Kiger Gorge (Harney County, Oregon) |
| Cascade Range | August 10, 2021: Skyline Divide & Chowder Ridge (Mt. Baker Wilderness, Washington) |
| Eastern Oregon | August 10-11, 2023: Steens Mountain: South Road & Big Indian Headwall (Harney County, Oregon) |
| Eastern Oregon | August 10, 2023: Steens Mountain Summit & Wildhorse Lake (Harney County, Oregon) |
| Cascade Range | August 11, 2009: Jefferson Park (Mt. Jefferson Wilderness, Oregon) |
| Cascade Range | August 11, 2021: Yellow Aster Butte (Mt. Baker Wilderness, Washington) |
| Cascade Range | August 11, 2022: Tatoosh Range (Mt. Rainier National Park, Washington) |
| Cascade Range | August 12, 2008: Barrett Spur (Mt. Hood Wilderness, Oregon) |
| Cascade Range | August 12, 2021: Damfino Lakes & Excelsior Peak (Mt. Baker-Snoqualmie National Forest, Washington) |
| Cascade Range | August 12, 2022: Naches Peak (Okanogan-Wenatchee National Forest, Washington) |
| Cascade Range | August 12, 2023: McKenzie Pass & Hand Lake (Willamette National Forest, Oregon) |
| Cascade Range | August 13, 2005: Black Crater (Deschutes National Forest, Oregon) |
| Western Oregon | August 13, 2006: Portland Japanese Garden |
| Cascade Range | August 13, 2019: Jefferson Park (Willamette National Forest, Oregon) |
| Cascade Range | August 14, 2013: Lake Ingalls (Alpine Lakes Wilderness, Washington) |
| Cascade Range | August 14, 2020: Canyon Creek Meadows & Three-Fingered Jack (Mt. Jefferson Wilderness, Oregon) |
| Cascade Range | August 14, 2024: Vista Ridge to Barrett Spur (Mt. Hood Wilderness, Oregon) |
| Cascade Range | August 15, 2010: Vista Ridge & Sunset on Mt. Hood, Oregon |
| Cascade Range | August 15, 2015: Middle Sister (Three Sisters Wilderness, Oregon) |
| Cascade Range | August 16, 2007: Pinnacle Ridge to Elk Cove (Mt. Hood Wilderness, Oregon) |
| Cascade Range | August 16, 2022: McNeil Point, Ho Rock, & Co Rock (Mt. Hood Wilderness, Oregon) |
| Columbia Gorge (West) | August 17, 2011: Wahkeena Falls & Multnomah Falls (Columbia River Gorge, Oregon) |
| Cascade Range | August 17, 2016: Elk Cove (Mt. Hood Wilderness, Oregon) |
| Cascade Range | August 18, 2009: Paradise Park (Mt. Hood, Oregon) |
| Cascade Range | August 18, 2014: Scott Paul Trail & Park Butte (Mt. Baker, Washington) |
| Cascade Range | August 19, 2012: Eliot Glacier (Mt. Hood Wilderness, Oregon) |
| Cascade Range | August 19, 2014: Maple Pass (North Cascades National Park, Washington) |
| Eastern Oregon | August 19-21, 2017: Total Eclipse of the Sun, Eastern Oregon |
| Cascade Range | August 19-20, 2019: Walupt Creek Falls & Cispus Pass (Goat Rocks Wilderness, Washington) |
| Cascade Range | August 19, 2020: Noble Knob, Yakima Peak, & Naches Peak (Washington) |
| Cascade Range | August 19, 2021: Van Trump Park & Comet Falls, Mt. Rainier National Park (Washington) |
| Cascade Range | August 19, 2024: Chair Peak (Alpine Lakes Wilderness, Washington) |
| Cascade Range | August 20, 2006: Vista Ridge & Eden Park (Mt. Hood Wilderness, Oregon) |
| Cascade Range | August 20, 2013: Elk Cove (Mt. Hood Wilderness, Oregon) |
| Cascade Range | August 20, 2023: Paradise, Mt. Rainier National Park (Washington) |
| Cascade Range | August 22, 2022: Little Three Creek Lake & Three Creek Lake (Deschutes National Forest, Oregon) |
| Cascade Range | August 23, 2022: Obsidian Trail (Three Sisters Wilderness, Oregon) |
| Cascade Range | August 24, 2005: Barrett Spur (Mt. Hood Wilderness, Oregon) |
| Cascade Range | August 25, 2012: Goat Rocks Wilderness (Gifford Pinchot National Forest, Washington) |
| Cascade Range | August 26, 2020: Divide Camp Trail to Adams Glacier & High Camp (Mt. Adams Wilderness, Washington) |
| Cascade Range | August 26, 2024: Bear Creek Mountain (Goat Rocks Wilderness, Washington) |
| Cascade Range | August 27-28, 2011: Paradise Park (Mt. Hood Wilderness, Oregon) |
| Cascade Range | August 27, 2014: Sunrise & Paradise (Mt. Rainier National Park, Washington) |
| Cascade Range | August 27, 2016: Enchantments One-Day Traverse (Alpine Lakes Wilderness, Washington) |
| Klamath Mountains & N California | August 27, 2017: Panther Meadow (Mount Shasta, California) |
| Western Oregon | August 27, 2021: Scappoose Bay (Columbia County, Oregon) |
| Cascade Range | August 28, 2008: Newton Clark Ridge (Mt. Hood Wilderness, Oregon) |
| Cascade Range | August 28-29, 2016: North Cascades (Washington) |
| Klamath Mountains & N California | August 28, 2017: Lassen Volcanic National Park (California) |
| Sierra Nevada | August 29, 2017: Horseshoe Meadows Road (Inyo County, California) |
| Cascade Range | August 29, 2020: Pinnacle Ridge Trail (Mt. Hood Wilderness, Oregon) |
| Sierra Nevada | August 30, 2017: Mount Whitney (Inyo National Forest, California) |
| Cascade Range | August 30, 2022: Cathedral Rock (Alpine Lakes Wilderness, Washington) |
| Cascade Range | August 31, 2013: Tam McArthur Rim & Broken Top (Deschutes National Forest, Oregon) |
| Sierra Nevada | August 31, 2017: Tioga Pass (Yosemite National Park, California) |
| Cascade Range | August 31, 2019: Newton Clark Ridge (Mt. Hood Wilderness, Oregon) |
| Cascade Range | August 31, 2022: Guye Peak (Alpine Lakes Wilderness, Washington) |
September |
| Cascade Range | September 2, 2009: Killen Creek/High Camp (Mt. Adams Wilderness, Washington) |
| Cascade Range | September 2, 2010: Mississippi Head (Mt. Hood, Oregon) |
| Cascade Range | September 3, 2006: Langille Crags (Mt. Hood Wilderness, Oregon) |
| Cascade Range | September 3, 2012: Jefferson Park (Mt. Jeffersion Wilderness, Oregon) |
| Cascade Range | September 3, 2020: Diamond Peak (Willamette National Forest, Oregon) |
| Cascade Range | September 3, 2021: Mount Hood Meadows (Mt. Hood National Forest, Oregon) |
| Klamath Mountains & N California | September 3-4, 2024: Shasta-Trinity Divide (Shasta-Trinity National Forest, California) |
| Klamath Mountains & N California | September 3, 2024: Mount Eddy & Deadfall Lakes (Shasta-Trinity National Forest, California) |
| Cascade Range | September 5, 2014: Eliot Glacier (Mt. Hood Wilderness, Oregon) |
| Klamath Mountains & N California | September 5, 2024: South Gate Meadows, Mount Shasta (Shasta-Trinity National Forest, California) |
| Columbia Gorge (West) | September 7, 2021: Rooster Rock & Dalton Point (Columbia River Gorge, Oregon) |
| Cascade Range | September 7, 2022: Bird Creek Meadows, Mt. Adams (Yakama Reservation, Washington) |
| Cascade Range | September 9, 2012: Memaloose Lake (Mt. Hood National Forest, Oregon) |
| Cascade Range | September 11, 2011: Falls Creek Falls (Gifford Pinchot National Forest, Washington) |
| Cascade Range | September 11, 2013: Gothic Basin (North Cascades, Washington) |
| Cascade Range | September 11-12, 2015: Stevens Pass & vicinity (Washington) |
| Western Oregon | September 11, 2021: Smith & Bybee Wetlands (Portland, Oregon) |
| Western Oregon | September 12, 2019: Saddle Mountain (Coast Range, Clatsop County, Oregon) |
| Columbia Gorge (West) | September 12, 2023: Wahkeena Falls & Multnomah Falls (Columbia River Gorge, Oregon) |
| Cascade Range | September 16, 2012: Lava Canyon (Mount St. Helens National Volcanic Monument, Washington) |
| Cascade Range | September 17, 2016: Broken Top (Three Sisters Wilderness, Oregon) |
| Cascade Range | September 19, 2015: Cloud Cap to Langille Crags & Coe Creek (Mt. Hood Wilderness, Oregon) |
| Columbia Gorge (West) | September 19, 2024: Columbia River below Bonneville Dam (Oregon & Washington) |
| Cascade Range | September 21, 2021: Sleeping Beauty, Steamboat Mountain, & waterfalls (Gifford Pinchot National Forest, Washington) |
| Cascade Range | September 25, 2005: Gnarl Ridge (Mt. Hood Wilderness, Oregon) |
| Olympic Peninsula | September 25, 2021: Mount Washington (Olympic National Forest, Washington) |
| Cascade Range | September 27, 2014: Coldwater Peak (Mt. St. Helens National Volcanic Monument, Washington) |
| Cascade Range | September 27, 2017: Whittier Ridge & Lakes Trail (Mt. St. Helens, Washington) |
| Klamath Mountains & N California | September 28, 2009: Mount Eddy & Deadfall Lakes (Shasta-Trinity National Forest, California) |
| Columbia Gorge (West) | September 30, 2011: Latourell Falls (Columbia River Gorge, Oregon) |
October |
| Cascade Range | October 1, 2020: The Enchantments (Alpine Lakes Wilderness, Washington) |
| Columbia Gorge (West) | October 1, 2022: Rooster Rock State Park (Columbia River Gorge, Oregon) |
| Cascade Range | October 2, 2010: Lemei Rock (Indian Heaven Wilderness, Washington) |
| Rocky Mountains | October 3 & 7, 2019: Mt. Raymond & Mt. Wolverine (Wasatch Mountains, Utah) |
| Cascade Range | October 4-5, 2014: Tamanawas Falls & Timothy Lake (Mt. Hood National Forest, Oregon) |
| Desert Southwest | October 4-6, 2019: Capitol Reef National Park (Utah) |
| Cascade Range | October 5, 2024: Newton Pinnacle, Mt. Hood Meadows, & Sahalie Falls (Mt. Hood National Forest, Oregon) |
| Cascade Range | October 6, 2013: Whittier Ridge & Lakes Trail (Mount St. Helens National Volcanic Monument, Washington) |
| Cascade Range | October 6, 2023: Tam McArthur Rim & Broken Top (Deschutes National Forest, Oregon) |
| Rocky Mountains | October 3 & 7, 2019: Mt. Raymond & Mt. Wolverine (Wasatch Mountains, Utah) |
| Columbia Gorge (West) | October 8, 2011: Mount Defiance, Oregon |
| Cascade Range | October 9, 2005: Tamanawas Falls (Mt. Hood National Forest, Oregon) |
| Cascade Range | October 11, 2015: Falls Creek Cave, Gifford Pinchot N.F., Washington |
| Klamath Mountains & N California | October 12, 2008: Mount Shasta (California) |
| Western Cascades | October 12, 2016: Opal Creek (Willamette National Forest, Oregon) |
| Cascade Range | October 12, 2019: Siouxon Creek (Gifford Pinchot National Forest, Washington) |
| Cascade Range | October 15, 2015: Ramona Falls & Muddy Fork (Mt. Hood Wilderness, Oregon) |
| Cascade Range | October 16, 2020: Lewis River (Gifford Pinchot National Forest, Washington) |
| Cascade Range | October 17, 2005: Lava Canyon (Mount St. Helens National Volcanic Monument, Washington) |
| Cascade Range | October 18, 2011: Sheep Canyon (Mount St. Helens, Washington) |
| Cascade Range | October 19, 2013: Bird Mountain (Indian Heaven Wilderness, Washington) |
| Cascade Range | October 19, 2014: Thomas Lake & East Crater (Indian Heaven Wilderness, Washington) |
| Cascade Range | October 19, 2018: Sandy River to Paradise Park (Mt. Hood Wilderness, Oregon) |
| Cascade Range | October 19, 2021: Thomas Lake & Blue Lake (Indian Heaven Wilderness, Washington) |
| Cascade Range | October 20, 2010: Mt. Margaret Backcountry (Mount St. Helens National Volcanic Monument, Washington) |
| Columbia Gorge (West) | October 23, 2005: Ruckel Ridge (Columbia River Gorge, Oregon) |
| Oregon Coast | October 24, 2017: Cape Perpetua & Newport (Oregon Coast) |
| Cascade Range | October 25, 2013: Illumination Saddle (Mt. Hood, Oregon) |
| Cascade Range | October 30, 2023: Ape Cave (Mt. St. Helens National Volcanic Monument, Washington) |
November |
| Cascade Range | November 1, 2020: White River Canyon & White River Glacier (Mt. Hood Wilderness, Oregon) |
| Cascade Range | November 3, 2007: Mount St. Helens climb (Washington) |
| Western Oregon | November 5, 2012: Silver Falls State Park (Oregon) |
| Cascade Range | November 8, 2014: Mt. Hood Meadows to White River Canyon & Timberline Lodge (Oregon) |
| Desert Southwest | November 8, 2015: Sedona, Arizona |
| Desert Southwest | November 9, 2015: La Barge Canyon (Superstition Mountains, Arizona) |
| Columbia Gorge (East) | November 14, 2010: Coyote Wall (Columbia River Gorge, Washington) |
| Desert Southwest | November 22-25, 2018: Southern Utah |
| Columbia Gorge (East) | November 24, 2017: Columbia Hills State Park (Klickitat County, Washington) |
| Columbia Gorge (East) | November 24, 2023: Columbia Hills State Park (Klickitat County, Washington) |
| Oregon Coast | November 28, 2013: Cape Falcon (Oswald West State Park, Oregon) |
| Columbia Gorge (West) | November 30, 2013: Dry Creek Falls & Wahclella Falls (Columbia River Gorge, Oregon) |
December |
| Columbia Gorge (East) | December 1, 2021: Columbia Hills State Park (Klickitat County, Washington) |
| Western Oregon | December 10, 2017: Saddle Mountain & Cannon Beach (Oregon Coast) |
| Oregon Coast | December 12, 2019: Cape Kiwanda, Sitka Sedge, & Oceanside (Oregon Coast) |
| Oregon Coast | December 24-26, 2010: Newport & Yaquina Head (Oregon Coast) |
| Cascade Range | December 29, 2013: Ramona Falls (Mt. Hood National Forest, Oregon) |
| Columbia Gorge (East) | December 31, 2023: Columbia Hills & The Labyrinth (Columbia River Gorge, Washington) |
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