Trail Races in Colorado, United States
58 upcoming races in Colorado. Browse by distance below, or open a race for course details, registration, and more.
5K
10K
10M
Half Marathon
Aspen Backcountry Heavy Half Marathon
Aspen, CO, USAug 1, 2026Half Marathon
Sheep Mountain Trail Runs Heavy Half
Fairplay, CO, USAug 1, 2026Half Marathon
Staunton Rocks! Half Marathon
Pine, CO, USAug 22, 2026Half Marathon
Devil on the Divide 22K
Empire, CO, USSep 12, 2026Half Marathon
Black Squirrel Half Marathon
Bellvue, CO, USSep 12, 2026Half Marathon
Pikes Peak Ascent
Manitou Springs, CO, USSep 19, 2026Half Marathon
WILD Wahatoya Runs Heavy Half Marathon
La Veta, CO, USSep 26, 2026Half Marathon
Red Feather Trail Jamboree Half Marathon
Red Feather Lakes, CO, USSep 27, 2026Half Marathon
The Bear Chase Half Marathon
Lakewood, CO, USOct 4, 2026Half Marathon
Blue Sky Trail Half Marathon
Fort Collins, CO, USOct 17, 2026Half Marathon
25K
Telluride Mountain Run 14 Mile
Telluride, CO, USAug 23, 202625K
Rock Hawk 25K
Castle Rock, CO, USAug 29, 202625K
Continental Divide Trail Run 16 Mile
Steamboat Springs, CO, USAug 29, 202625K
Sangre de Cristo Trail Festival 27K
Westcliffe, CO, USSep 27, 202625K
Estes Epic Heavy Half
Estes Park, CO, USSep 27, 202625K
Sage Burner Trail Race 28K
Gunnison, CO, USOct 3, 202625K
30K
Marathon
50K
Aspen Backcountry 50K
Aspen, CO, USAug 1, 202650K
Sheep Mountain Trail Runs 50k
Fairplay, CO, USAug 1, 202650K
Telluride Mountain Run 24 Mile
Telluride, CO, USAug 22, 202650K
Rock Hawk 50K
Castle Rock, CO, USAug 29, 202650K
Devil on the Divide 50K
Empire, CO, USSep 12, 202650K
West Line Winder 50K
Buena Vista, CO, USSep 26, 202650K
Sangre de Cristo Trail Festival 50K
Westcliffe, CO, USSep 26, 202650K
Crested Butte Ultra 55K
Crested Butte, CO, USSep 26, 202650K
Crested Butte Ultra 35K
Crested Butte, CO, USSep 26, 202650K
Red Feather Trail Jamboree 50K
Red Feather Lakes, CO, USSep 26, 202650K
Sawatch Ascent 50K
Buena Vista, CO, USSep 27, 202650K
Sage Burner Trail Race 50K
Gunnison, CO, USOct 3, 202650K
Above the Clouds Ultra 50K
Woodland Park, CO, USOct 3, 202650K
The Bear Chase 50K
Lakewood, CO, USOct 3, 202650K
Kessel Run Ultra 50K
Fruita, CO, USNov 7, 202650K
50 Mile
Sheep Mountain Trail Runs 50 Mile
Fairplay, CO, USAug 1, 202650 Mile
Telluride Mountain Run 40 Mile
Telluride, CO, USAug 22, 202650 Mile
Red Feather Trail Jamboree 50 Mile
Red Feather Lakes, CO, USSep 25, 202650 Mile
Sangre de Cristo Trail Festival 50 Mile
Westcliffe, CO, USSep 26, 202650 Mile
Crested Butte Ultra 50 Mile
Crested Butte, CO, USSep 26, 202650 Mile
The Bear Chase 50 Mile
Lakewood, CO, USOct 3, 202650 Mile
Kessel Run Ultra 50 Mile
Fruita, CO, USNov 7, 202650 Mile
100K
100 Mile
other
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