Trail Run Project Logo

Colorado

Area suggestions or local tips? Tell us!

Zoom in to see details
Map Key

16,474 mi 26,513 km of trail 470 Runs

Gems 60 Gems Easy Trails 2,142 Trails Intermediate Trails 2,162 Trails Hard Trails 680 Trails
Area suggestions or local tips? Tell us!
Trail Run Project is built by runners like you.
Share what you know about this area with the community.

Gems in Colorado - 60

Trail Run Project is built by runners like you. Add Your Gems

gem Favorite The view to Hallett Peak and Flattop Mountain from Dream Lake.

Dream Lake

(101) Estes Park, CO
gem Favorite One of the best picnic spots in Boulder!

Royal Arch

(80) Boulder, CO
gem Favorite Enjoyed a late summer lunch facing Hallett Peak at Bear Lake.

Bear Lake

(88) Estes Park, CO
gem Favorite Alberta Falls

Alberta Falls

(76) Estes Park, CO
gem Favorite Hanging Lake

Hanging Lake

(50) Glenwoo…, CO
gem Favorite Looking south across Gem Lake on a calm spring morning

Gem Lake

(48) Estes Park, CO
gem Favorite View towards Never Summer Mountains, Rocky Mountain NP

Trail Ridge Road Summit

(39) Grand Lake, CO
gem Favorite The edge of Chasm Lake

Chasm Lake and The Diamond

(31) Grand Lake, CO

Runs in Colorado - 471

Trail Run Project is built by runners like you. Add Your Runs

Favorite One hell of an evening at the Maroon Bells
Intermediate/Difficult

Four Pass Loop

27.1 mi 43.6 km • Loop • 7,327 ft Ascent 2233.3 m Ascent

(148) Snowmas…, CO
Favorite Lone Eagle Peak above Mirror - from the Crater Lake Trail
Intermediate

Monarch Lake to Crater Lake

14.9 mi 24.0 km • Out and Back • 2,017 ft Ascent 614.74 m Ascent

(70) Granby, CO
Favorite The Loch, Rocky Mountain NP CO
Intermediate/Difficult

Sky Pond

8.3 mi 13.3 km • Loop • 2,000 ft Ascent 609.68 m Ascent

(237) Estes Park, CO
Favorite Bear Peak panorama
Intermediate/Difficult

Bear Peak Out and Back

5.7 mi 9.2 km • Out and Back • 2,541 ft Ascent 774.37 m Ascent

(112) Boulder, CO
Favorite Hills while going up Anemone from Red Rocks
Difficult

Boulder Skyline Traverse

16.3 mi 26.3 km • Point to Point • 5,409 ft Ascent 1648.56 m Ascent

(75) Superior, CO
Favorite The view to Hallett Peak and Flattop Mountain from Dream Lake.
Easy/Intermediate

Emerald Lake

3.3 mi 5.4 km • Loop • 661 ft Ascent 201.34 m Ascent

(272) Estes Park, CO
Favorite Sunrise summit of Longs Peak looking East. AMAZING!
Difficult

Longs Peak - Keyhole Route

14.2 mi 22.8 km • Out and Back • 5,525 ft Ascent 1684.02 m Ascent

(88) Estes Park, CO
Favorite Sunrise from Mt Saintas
Intermediate

Sunshine Lion's Lair Loop

5.3 mi 8.5 km • Loop • 1,261 ft Ascent 384.48 m Ascent

(107) Boulder, CO

Trails in Colorado - 4510

Trail Run Project is built by runners like you. Add Your Trails

1.1 mi 1.8 km #1The Manitou Incline
Difficult
Manitou Springs, CO
Difficult
1.1 mi 1.8 km Manitou Springs, CO 85 
3.4 mi 5.5 km #2Ice Lake Trail
Intermediate/Difficult
Silverton, CO
Intermediate/Difficult
3.4 mi 5.5 km Silverton, CO 51 
1.9 mi 3.1 km #3St. Mary's Glacier Trail
Intermediate
Idaho Springs, CO
Intermediate
1.9 mi 3.1 km Idaho Springs, CO 52 
0.6 mi 1.0 km #4First-Second Flatiron Trail
Intermediate/Difficult
Boulder, CO
Intermediate/Difficult
0.6 mi 1.0 km Boulder, CO 47 
1.5 mi 2.4 km #5Chief Mountain Trail #58
Intermediate
Idaho Springs, CO
Intermediate
1.5 mi 2.4 km Idaho Springs, CO 46 
2.3 mi 3.7 km #6Rattlesnake Gulch Trail
Intermediate
Coal Creek, CO
Intermediate
2.3 mi 3.7 km Coal Creek, CO 49 
3.2 mi 5.2 km #7Mills Lake - Black Lake Trail
Intermediate
Estes Park, CO
Intermediate
3.2 mi 5.2 km Estes Park, CO 42 
3.3 mi 5.3 km #8Herman Gulch Trail #98
Intermediate
Georgetown, CO
Intermediate
3.3 mi 5.3 km Georgetown, CO 38 
6.1 mi 9.8 km #9Chicago Lakes Trail #52
Intermediate/Difficult
Georgetown, CO
Intermediate/Difficult
6.1 mi 9.8 km Georgetown, CO 35 
4.2 mi 6.8 km #10Flattop Mountain Trail
Intermediate/Difficult
Estes Park, CO
Intermediate/Difficult
4.2 mi 6.8 km Estes Park, CO 35 
1.0 mi 1.6 km #11Dream Lake Trail
Intermediate
Estes Park, CO
Intermediate
1.0 mi 1.6 km Estes Park, CO 32 
7.6 mi 12.2 km #12Blue Lakes Trail
Intermediate
Telluride, CO
Intermediate
7.6 mi 12.2 km Telluride, CO 25 
0.9 mi 1.5 km #13Lake Haiyaha Trail
Intermediate
Estes Park, CO
Intermediate
0.9 mi 1.5 km Estes Park, CO 33 
8.8 mi 14.2 km #14Beaver Brook Trail
Intermediate/Difficult
Golden, CO
Intermediate/Difficult
8.8 mi 14.2 km Golden, CO 33 
3.1 mi 5.0 km #15Carpenter Peak Trail
Intermediate
Roxborough Park, CO
Intermediate
3.1 mi 5.0 km Roxborough Park, CO 39 
2.5 mi 4.0 km #16Horsetooth Rock Trail
Intermediate
Bellvue, CO
Intermediate
2.5 mi 4.0 km Bellvue, CO 35 
1.8 mi 2.9 km #17Mt. Sniktau Trail
Intermediate
Keystone, CO
Intermediate
1.8 mi 2.9 km Keystone, CO 26 
2.1 mi 3.3 km #18Silver Dollar Lake Trail #79
Intermediate
Georgetown, CO
Intermediate
2.1 mi 3.3 km Georgetown, CO 26 
8.0 mi 12.8 km #19Pawnee Pass Trail
Intermediate/Difficult
Nederland, CO
Intermediate/Difficult
8.0 mi 12.8 km Nederland, CO 21 
3.5 mi 5.6 km #20Bergen Peak Trail
Intermediate/Difficult
Kittredge, CO
Intermediate/Difficult
3.5 mi 5.6 km Kittredge, CO 37 

Photos of Colorado - 6128

Trail Run Project is built by runners like you. Add Your Photos

Lone Eagle Peak above Mirror - from the Crater Lake Trail
Apr 14, 2015 near Granby, CO
One hell of an evening at the Maroon Bells
Sep 27, 2015 near Snowmas…, CO
Bighorn Pass, looking west towards Mount of the Holy Splotch
Feb 4, 2015 near Vail, CO
The Crystal Mill
Dec 6, 2014 near Crested…, CO
The view to Hallett Peak and Flattop Mountain from Dream Lake.
Dec 8, 2015 near Estes Park, CO
Lone Eagle Peak reflected in unnamed small pond
Apr 14, 2015 near Granby, CO
Mills Lake early spring sunset
Jan 30, 2015 near Grand Lake, CO
Milky Way from the park
Jan 8, 2015 near Estes Park, CO

Classes & Events Near You

Find More Classes and Events

Shop REI Adventures

Find More REI Adventures


Trail Run Project is part of the REI Co-op family,
where a life outdoors is a life well lived.

Shop REI Running