Trail Races in Colorado

Cirque Series - Arapahoe Basin, CO

Sat, Sep 5 · Keystone, CO Keystone

Trail Pro DivisionSport Division (beginner / intermediate)Expert Division

From $90.15 Open Closing Soon

Register →

Res Hill Ruck

Fri, Sep 11 · Pagosa Springs, CO Pagosa Springs

Trail Res Hill Ruck

From $40 Open Closing Soon

Register →

Trail Sisters Women's Half Marathon & 10k

Sat, Sep 12 · Buena Vista, CO Buena Vista

Trail Trail Sisters Women's 10kTrail Sisters Women's Half Marathon

From $55 Open Closing Soon

Register →

53rd Annual Imogene Pass Run

Sat, Sep 12 · Telluride, CO Telluride

Trail 53rd Annual Imogene Pass Run

From $130 Open Closing Soon

Register →

Red Feather Trail Jamboree

Fri, Sep 25 · Red Feather Lakes, CO Red Feather Lakes

Trail Red Feather Trail Jamboree Half MarathonRed Feather Trail Jamboree 50kmRed Feather Trail Jamboree 50 Mile +1

From $90 Open

Register →

Sangre de Cristo Trail Festival

Sat, Sep 26 · Westcliffe, CO Westcliffe

Trail 8-Mile27k50k +3

From $40 Open

Register →

West Line Winder

Sat, Sep 26 · Buena Vista, CO Buena Vista

Trail 50k30k

From $105 Open

Register →

OUTLAST COLORADO SPRINGS

Sat, Sep 26 · Colorado Springs, CO Colorado Springs

Trail 6 Hour Challenge

From $90 Open Closing Soon

Register →

Mountain Marmot Trail Run presented by Durango Running Company

Sat, Sep 26 · Durango, CO Durango

Trail Mountain Marmot Trail Run

From $85 Open

Register →

Greenland Open Space Pack Burro Race presented by Double Rainbow Ranch (8 Mile and 3 Mile)

Sun, Sep 27 · Larkspur, CO Larkspur

Trail Greenland Open Space 3 MileGreenland Open Space 8 Mile

From $60 Open 85 spots left

Register →

HRCA Wildcat Mountain Trail Races

Sat, Oct 3 · Littleton, CO Littleton

Trail 10K10MKid's Race

From $10 Open Closing Soon

Register →

OUTLAST DENVER

Sat, Oct 3 · Littleton, CO Littleton

Trail 6 Hour Challenge

From $90 Open Closing Soon

Register →

Rubey Rescue Run

Sun, Oct 4 · Aspen, CO Aspen

Trail 1 Mile3.5M Trail Run

From $60.38 Open

Register →

Suffer Better 10th Annual Fall Trail Runs

Sat, Oct 10 · Pine, CO Pine

Trail Suffer Better 25KSuffer Better 25K - FishSlappers DivisionSuffer Better 50K +1

From $25 Open 30 spots left

Register →

Chili Chase

Sat, Oct 17 · Durango, CO Durango

Trail Chili Chase

From $40 Open

Register →

Blue Sky Trail Marathon & Half Marathon

Sat, Oct 17 · Fort Collins, CO Fort Collins

Trail Blue Sky Trail Half MarathonBlue Sky Trail Marathon

From $90 Open

Register →

Indian Creek Trail Runs

Sat, Oct 17 · Sedalia, CO Sedalia

Trail 5-Mile15-Mile55k +1

From $30 Open

Register →

HRCA Backcountry Wilderness Half Marathon

Sat, Nov 7 · Lone Tree, CO Lone Tree

Trail Half Marathon

From $65 Open

Register →

Race in the Clouds - Alma Dirt Festival 2027

Fri, Jun 25 · Alma, CO Alma

Trail Highschool/Middle School Short Course (6.1miles)Highschool/Middle School Short Course (6.1miles)Trail 10K +21

From $0 Open 10 spots left

Register →