Image Credits
Many of the trail photos on Colorado United come from Wikimedia Commons contributors under Creative Commons licenses (CC0, Public Domain, CC BY, CC BY-SA). We're grateful to the photographers whose work we use. Click any photo title to see the original on Wikimedia Commons.
| Used as | Photo | By | License |
|---|---|---|---|
| /images/articles/best-backpacking-sleeping-pads-colorado.jpg | Backpacking supplies (pack, tent, sleeping pad, and bear box) at Panhandle Gap.jpg | Buidhe | CC BY-SA 4.0 |
| /images/articles/best-backpacking-tents-colorado.jpg | Goat Rocks Wilderness with two tents visible.jpg | Mattsjc | CC BY 4.0 |
| /images/articles/best-bear-canisters-colorado.jpg | Truck Parked Inside Indian Peaks Wilderness.jpg | Chezunchained | CC BY-SA 4.0 |
| /images/articles/best-dehydrated-backpacking-meals-colorado.jpg | Minimize Campfire Impacts- Day 6 - The Seven Days of Leave No Trace (11558251555).webm | Grand Canyon NPS | Public domain |
| /images/articles/best-hikes-near-estes-park.jpg | Dream Lake, Colorado (48051925233).jpg | Nicolas Henderson | CC BY 2.0 |
| /images/articles/black-canyon-gunnison-river.jpg | Black Canyon kz02.jpg | Krzysztof Ziarnek, Kenraiz | CC BY-SA 4.0 |
| /images/articles/black-canyon-of-the-gunnison-guide.jpg | Black Canyon of the Gunnison 03.jpg | AndrewKPepper | CC BY-SA 4.0 |
| /images/articles/black-canyon-painted-wall.jpg | BlackCanyonoftheGunnisonNationalPark.jpg | Massimo Catarinella | CC BY-SA 3.0 |
| /images/articles/black-canyon-south-rim-view.jpg | Black canyon gunnison Colorado.jpg | G. Edward Johnson | CC BY-SA 3.0 |
| /images/articles/boulder-canyon-castle-rock.jpg | Castle Rock, Boulder Canyon. Boulder County, Colorado - NARA - 517497.jpg | William Henry Jackson | Public domain |
| /images/articles/boulder-canyon-creek.jpg | Boulder Canyon Tyrolean Traverse.jpg | Andrew Magill | CC BY 2.0 |
| /images/articles/boulder-canyon-trail.jpg | Boulder creek colorado.jpg | Susan from Alameda, CA, USA | CC BY 2.0 |
| /images/articles/boulder-flatirons-autumn.jpg | The Flatirons in autumn..JPG | Eddyl | CC BY-SA 3.0 |
| /images/articles/bridal-veil-falls-telluride.jpg | Bridal Veil Falls Telluride CO3.jpg | Terry Foote (talk) | CC BY-SA 3.0 |
| /images/articles/conundrum-hot-springs-aspen.jpg | Conundrum Hike (4955444662).jpg | Zach Dischner | CC BY 2.0 |
| /images/articles/crater-lake-maroon-bells.jpg | Crater Lake, Maroon Bells, Colorado.jpg | Leonardkaroline | CC BY 4.0 |
| /images/articles/crestone-traverse-guide.jpg | Crestone Peak - panoramio.jpg | Fredlyfish4 | CC BY-SA 4.0 |
| /images/articles/fish-creek-falls-steamboat.jpg | Fish Creek Falls, near Steamboat Springs (2619517095).jpg | KimonBerlin | CC BY-SA 2.0 |
| /images/articles/flatirons-chautauqua-boulder.jpg | Flatirons Sunrise.jpg | Tyler Cipriani | CC BY-SA 4.0 |
| /images/articles/garden-of-the-gods-guide.jpg | Garden of the Gods Sunset.jpg | Daniel Schwen | CC BY-SA 4.0 |
| /images/articles/glenwood-hot-springs-pool-guide.jpg | Glenwood Hot Springs Pool 2020.JPG | Jeffrey Beall | CC BY 4.0 |
| /images/articles/grays-peak-guide.jpg | Info boards at Grays Peak Trailhead.jpg | Xnatedawgx | CC BY-SA 4.0 |
| /images/articles/great-sand-dunes-national-park-guide.jpg | Sunset near Great Sand Dunes National Park.jpg | Andrew Russell | CC BY 2.0 |
| /images/articles/holy-cross-guide.jpg | Mount of the Holy Cross, Colorado, 1900 (3752323586).jpg | trialsanderrors | CC BY 2.0 |
| /images/articles/indian-hot-springs-idaho-springs-guide.jpg | Indian Hot Springs - DPLA - 14f1819950d700e0adb1c9dbba13e97a.jpg | Geological Survey (U.S.) | Public domain |
| /images/articles/mount-bierstadt-guide.jpg | Mount Bierstadt and Abyss Lake Scenic Area, Colorado, US.jpg | Clyde Charles Brown | CC BY-SA 4.0 |
| /images/articles/mount-elbert-guide.jpg | .Mount Elbert Trail.jpg | Khoshhat | CC BY-SA 4.0 |
| /images/articles/mount-harvard-guide.jpg | Mount Harvard and sign from U.S. Highway 24.jpg | David Herrera from Albuquerque, NM, Bernalillo | CC BY 2.0 |
| /images/articles/mount-massive-guide.jpg | Mt. Massive broad view.jpg | Gaep13 at en.wikipedia) | Public domain |
| /images/articles/mount-sanitas-boulder-view.jpg | Mount Sanitas in Boulder.jpg | Bigmacthealmanac | CC BY-SA 4.0 |
| /images/articles/nighthorse-reservoir-durango.jpg | Nighthorse Reservoir and Durango, Colorado (14518417223).jpg | Ken Lund from Reno, Nevada, USA | CC BY-SA 2.0 |
| /images/articles/north-clear-creek-falls-colorado.jpg | North Clear Creek Falls (Hinsdale County, Colorado).JPG | Jeffrey Beall | CC BY 4.0 |
| /images/articles/ouray-hot-springs-pool.jpg | Ouray Hot Springs Pool.jpg | DiScience | CC BY-SA 4.0 |
| /images/articles/pikes-peak-barr-trail-guide.jpg | Pikes Peak by David Shankbone.jpg | David Shankbone | CC BY-SA 3.0 |
| /images/articles/quandary-peak-guide.jpg | Quandary Peak, Colorado, USA (14382068790).jpg | M M from Switzerland | CC BY-SA 2.0 |
| /images/articles/royal-arch-boulder.jpg | Royal arch (37417921536).jpg | Christian Collins | CC BY-SA 2.0 |
| /images/articles/seven-falls-colorado-springs-guide.jpg | Cheyenne Canyon Mountain. Five miles south of Colorado Springs, by Nims, F. A. (Franklin A.).jpg | Nims, F. A. (Franklin A.) -- Photographer | Public domain |
| /images/articles/womens-hiking-apparel-colorado.jpg | A cheerful hiker on Cathedral Mountain on July 26, 2019.JPG | Denali National Park and Preserve (NPS) | Public domain |
| /images/articles/womens-hiking-apparel-layering.jpg | Hiking along the Savage Alpine Trail on May 25, 2019.JPG | Denali National Park and Preserve (NPS) | Public domain |
| /images/articles/zapata-falls-colorado.jpg | Zapata Falls - San Luis Valley, Colorado.jpg | Peter Michael Kamarchik | CC BY-SA 4.0 |
| /images/trails/american-basin-trail.jpg | American Basin Area of Critical Environmental Concern, Colorado (15660233112).jpg | Bureau of Land Management | Public domain |
| /images/trails/american-lake-trail.jpg | Sloan Lake View from American Basin Trail.jpg | OakleyOriginals | CC BY 2.0 |
| /images/trails/anthracite-pass-trail.jpg | Aspen trees, Somerset County, Colorado.jpg | JPGoldberg | CC BY-SA 4.0 |
| /images/trails/arapaho-pass-trail.jpg | US Forest Road 192.1 from Squaw Pass Road, snow covered.jpg | Xnatedawgx | CC BY-SA 4.0 |
| /images/trails/barr-trail.jpg | Barr Trail Trailhead (2292087940).jpg | brian gautreau from Austin, TX, USA | CC BY-SA 2.0 |
| /images/trails/bear-lake-trail.jpg | Cloudy morning at bear lake (37317249226).jpg | Christian Collins | CC BY-SA 2.0 |
| /images/trails/bear-peak-trail.jpg | Bear Peak, Boulder July 2016 2.jpg | Thomson200 | CC0 |
| /images/trails/berry-creek-trail.jpg | CherryCreekPath.jpg | Gtj82 | CC BY-SA 3.0 |
| /images/trails/bierstadt-lake-trail.jpg | Bierstadt Lake Trail, Rocky Mountain National Park, 2009.jpg | DimiTalen | CC0 |
| /images/trails/big-south-trail.jpg | Clear Creek Trail 6.JPG | Jeffrey Beall | CC BY 4.0 |
| /images/trails/black-canyon-rim-trail.jpg | North Rim Road, Black Canyon of the Gunnison National Park.JPG | Jeffrey Beall | CC BY 4.0 |
| /images/trails/blanca-ellingwood.jpg | MtBlancaEast.jpg | No machine-readable author provided. Meniscus~commonswiki assumed (based on copyright claims). | CC BY-SA 3.0 |
| /images/trails/boy-scout-trail.jpg | BLMers Giving Back- Two BLMers Help Local Boy Scout Troop Get Outside (16258381298).jpg | Bureau of Land Management | Public domain |
| /images/trails/buffalo-pass-trail.jpg | Historical Illustration of Buffalo Soldiers on Mosca Pass Trail, Great Sand Dunes (26556119438).jpg | Great Sand Dunes National Park and Preserve | Public domain |
| /images/trails/carpenter-peak-trail.jpg | View from Carpenter Peak Trail, Roxborough State Park.jpg | Sdkb | CC BY-SA 4.0 |
| /images/trails/castlewood-canyon-dam-ruins.jpg | Castlewood Dam Trails.jpg | Zenhaus | CC BY 3.0 |
| /images/trails/cathedral-lake-trail.jpg | Grand Lake, CO 9-2012 (8054104879).jpg | inkknife_2000 (7.5 million views +) | CC BY-SA 2.0 |
| /images/trails/chasm-lake.jpg | Chasm view wall.jpg | Khoshhat | CC BY-SA 4.0 |
| /images/trails/chicago-lakes.jpg | Chicago Lakes, by Chamberlain, W. G. (William Gunnison).jpg | Chamberlain, W. G. (William Gunnison) -- Photographer | Public domain |
| /images/trails/columbine-lake-trail.jpg | Columbine Lake San Juan National Park - panoramio.jpg | SFC H | CC BY 3.0 |
| /images/trails/conundrum-hot-springs.jpg | Conundrum Hike (4955444662).jpg | Zach Dischner | CC BY 2.0 |
| /images/trails/crater-lake-trail.jpg | Crater Lake, United States (Unsplash).jpg | Chris Abney chrisabney | CC0 |
| /images/trails/crosier-mountain-trail.jpg | Besseya plantaginea - Flickr - aspidoscelis.jpg | Patrick Alexander from Las Cruces, NM | CC0 |
| /images/trails/crystal-peak-trail.jpg | Jasper Lake Colorado.jpg | SBobby | CC BY-SA 4.0 |
| /images/trails/cub-lake-trail.jpg | Cub Lake Trail3.JPG | LeilaN | Public domain |
| /images/trails/devils-backbone-trail.jpg | Trail Sign.jpg | Tekim | CC0 |
| /images/trails/devils-causeway-trail.jpg | Devils Causeway.jpg | Lvaughn7 | CC BY-SA 4.0 |
| /images/trails/devils-head-lookout.jpg | Devil's Head Lookout Tower.JPG | Glennfcowan | CC BY 3.0 |
| /images/trails/engineer-mountain-trail.jpg | Colorado Trail - Engineer Mountain.jpg | James Charnesky | CC BY 2.0 |
| /images/trails/fern-lake-trail.jpg | Fern lake trail (49061646798).jpg | Christian Collins | CC BY-SA 2.0 |
| /images/trails/fish-creek-falls-trail.jpg | Footbridge at base of Fish Creek Falls.jpg | Paulmcdonald | CC BY-SA 4.0 |
| /images/trails/flatirons-vista-trail.jpg | Paragon Estates open-space path at Vaquero Drive with Flatirons, Boulder County, Colorado, USA - 2025.jpg | Mikepascoe | CC0 |
| /images/trails/four-pass-loop.jpg | -TravelTuesday with My Public Lands (24212151492).jpg | mypubliclands | Public domain |
| /images/trails/gilpin-lake-trail.jpg | Gilpin Lake - Flickr - brewbooks.jpg | brewbooks from near Seattle, USA | CC BY-SA 2.0 |
| /images/trails/gore-lake-trail.jpg | Rocky Mountain National Park 03.jpg | Niagara66 | CC BY-SA 4.0 |
| /images/trails/grays-torreys-peaks.jpg | Grays Peak Trail, cairn, hikers, Grays & Torreys.jpg | Xnatedawgx | CC BY-SA 4.0 |
| /images/trails/great-sand-dunes-nature-trail.jpg | Sand dunes in Great Sand Dunes National Park (5806631118).jpg | Zach Dischner | CC BY 2.0 |
| /images/trails/green-mountain-boulder-trail.jpg | Summit View Bear Peak Colorado (217974769).jpeg | Matt V | CC BY 3.0 |
| /images/trails/greyrock-mountain-trail.jpg | Poudre Canyon, Greyrock trail.jpg | Charles Willgren from Fort Collins, Colorado, United States | CC BY 2.0 |
| /images/trails/grizzly-creek-trail.jpg | Trail on the way to Grizzly Peak.jpg | Ben Mason from Denver | CC BY 2.0 |
| /images/trails/hermosa-creek-trail.jpg | Indian Trail Ridge, La Plata and Montezuma counties, Colorado, USA 02.jpg | John Sowell | CC BY-SA 4.0 |
| /images/trails/humboldt-peak.jpg | View from Humboldt Peak West Ridge.jpg | GeoCupcakes | CC BY-SA 4.0 |
| /images/trails/hunter-creek-trail.jpg | Aspen, Colorado in autumn.JPG | Jeffrey Beall | CC BY 4.0 |
| /images/trails/ice-lake-basin.jpg | Sierra San Juan. View in Ice Lakes Basin. Telluride Quadrangle. San Juan County, Colorado. - NARA - 517099.jpg | William Henry Jackson | Public domain |
| /images/trails/kit-carson-challenger.jpg | Kit carson from between.jpg | Adam Ginsburg | CC BY-SA 2.5 |
| /images/trails/la-plata-peak.jpg | Rinker Peak above Ellingwood Ridge.jpg | Andrew Davidoff | CC BY-SA 2.0 |
| /images/trails/lily-lake-trail.jpg | Glacier Lily - Flickr - brewbooks.jpg | brewbooks from near Seattle, USA | CC BY-SA 2.0 |
| /images/trails/linkins-lake-trail.jpg | Linkins Lake.JPG | Fredlyfish4 | CC BY-SA 3.0 |
| /images/trails/lovell-gulch-trail.jpg | 2025-04-13 Lovell Gulch - 001.jpg | mark byzewski | CC BY 2.0 |
| /images/trails/manitou-incline.jpg | The Manitou Incline just before the false summit 21 Nov 12.jpg | Ahodges7 | CC BY-SA 3.0 |
| /images/trails/mayflower-gulch-trail.jpg | Mayflower Gulch Trail, Frisco, United States (Unsplash).jpg | Nathan Anderson nathananderson | CC0 |
| /images/trails/mesa-trail.jpg | Mesa Gravels (Pleistocene; Red Rock Canyon Open Space, Colorado Springs, Colorado, USA) 2.jpg | James St. John | CC BY 2.0 |
| /images/trails/mohawk-lakes.jpg | Mohawk Lake, CO.jpg | Adam Baker from Houston / Moscow / Toulouse (travel a lot) | CC BY 2.0 |
| /images/trails/mount-bierstadt.jpg | Mount Bierstadt seen from Guanella Pass, July 2016.jpg | Thomson200 | CC0 |
| /images/trails/mount-falcon-castle-trail.jpg | Parmalee Trail @ Castle Trail 2016-07-12 960.jpg | Chris Light | CC BY-SA 4.0 |
| /images/trails/mount-morrison-trail.jpg | Dinosaur Ridge Open Space Park 04.jpg | IveGoneAway | CC BY-SA 4.0 |
| /images/trails/mount-sanitas-trail.jpg | Focus on the Right Path (Unsplash).jpg | Trevor Brown trevormbrown7 | CC0 |
| /images/trails/mount-zirkel-trail.jpg | Mt. Zirkel Wilderness backpacker.JPG | TomKonrad | CC BY-SA 4.0 |
| /images/trails/north-table-mountain-loop.jpg | 18 Road and Kokopelli Loops Trails in Colorado (20752484399).jpg | mypubliclands | Public domain |
| /images/trails/notch-mountain-trail.jpg | Notch Mountain and Mount of the Holy Cross.jpg | dog4aday | CC BY 2.0 |
| /images/trails/ouray-perimeter-trail.jpg | Ouray, Colorado from Perimeter Trail.JPG | Jason Pawela | CC BY-SA 4.0 |
| /images/trails/pawnee-buttes-trail.jpg | Pawnee Buttes2010.jpg | Marjaliisa | CC BY-SA 3.0 |
| /images/trails/picture-rock-trail.jpg | Vertically-tilted beds (Dakota Sandstone, Lower Cretaceous; Red Rock Canyon Open Space, Colorado Springs, Colorado, USA) 15.jpg | James St. John | CC BY 2.0 |
| /images/trails/pitkin-lake-trail.jpg | Trail over Alpine Pass, by Jackson, William Henry, 1843-1942.png | Jackson, William Henry, 1843-1942 -- Photographer | Public domain |
| /images/trails/pueblo-mountain-park-trail.jpg | Carhart Trail west trailhead.JPG | Jeffrey Beall | CC BY 4.0 |
| /images/trails/rabbit-ears-peak-trail.jpg | Continental Divide - Rabbit Ears Pass Sign (28785027125).jpg | Tony Webster from Minneapolis, Minnesota | CC BY-SA 2.0 |
| /images/trails/red-mountain-trail-manitou.jpg | Pikes Peak Granite (Mesoproterozoic, 1.08 Ga; Ute Trail, Manitou Springs, Colorado, USA) 6.jpg | James St. John | CC BY 2.0 |
| /images/trails/roxborough-fountain-valley-trail.jpg | Fountain Valley Trail Roxborough SP.JPG | Footwarrior | CC BY-SA 4.0 |
| /images/trails/savage-lakes-trail.jpg | Durango, Colo., C.R. Savage Photo.jpg | Charles Roscoe Savage | Public domain |
| /images/trails/service-creek-trail.jpg | West Clear Creek Trail (38278503384).jpg | Coconino National Forest | CC0 |
| /images/trails/south-boulder-peak-trail.jpg | South Boulder Peak and Bear Peak GPS Track.jpg | Jeremiah LaRocco | CC BY-SA 2.0 |
| /images/trails/sprague-lake-trail.jpg | Viewatspraguelake.jpg | Charles M. Sauer | CC BY-SA 3.0 |
| /images/trails/spring-creek-trail-steamboat.jpg | Fountain Creek (Manitou Springs, Colorado, USA) (49277395651).jpg | James St. John | CC BY 2.0 |
| /images/trails/the-grottos-trail.jpg | Buenavista grotto, Garden of the Gods, Colorado, by Martin, Alexander, d. 1929.jpg | Martin, Alexander, d. 1929 -- Photographer | Public domain |
| /images/trails/three-sisters-trail.jpg | Bluebird Meadow Trail 2016-07-12 903.jpg | Chris Light | CC BY-SA 4.0 |
| /images/trails/vallecito-creek-trail.jpg | Vallecito Creek Trail First Bridge - panoramio.jpg | SFC H | CC BY 3.0 |
| /images/trails/wheeler-lakes-trail.jpg | Gore Range.JPG | Jeffrey Beall | CC BY 4.0 |
| /images/trails/wheeler-trail.jpg | Wheeler Geologic Area (36249616404).jpg | John Fowler from Placitas, NM, USA | CC BY 2.0 |
| /images/trails/willow-lake-trail.jpg | Willow Lake CO.JPG | Fredlyfish4 | CC BY-SA 3.0 |
| /images/trails/yankee-boy-basin-trail.jpg | Upperportionofyankeeboybasin2005.jpg | Meniscus | Public domain |
| /images/trails/zapata-falls.jpg | Zapata Falls sign - colorado.jpg | Servantsheart8 | CC BY-SA 4.0 |
License summary
- CC0 / Public Domain: free to use without attribution (we credit anyway).
- CC BY 2.0 / 3.0 / 4.0: free to use with attribution.
- CC BY-SA 2.0 / 3.0 / 4.0: free to use with attribution; derivatives must use the same license.
If you're the photographer of any image used here and have concerns about attribution or use, email hello@coloradounited.com and we'll address it promptly.