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Colorado

Here's a full listing of races and events in Colorado.

Visit these pages for just marathons, half marathon, 10K or 5K races.

featured races

Currently there are no featured events for this state.

running & multisport races

Rebel Run 5K
Trail Running
Aug 23, 2026
Denver
Pioneer Prairie Dog Half Marathon, 10K & 5K
Road Running
Aug 23, 2026
Westminster
Rock Hawk Trail Races
Trail Running
Aug 29, 2026
Denver
Wine Run 5k at The Winery at Holy Cross Abbey
Road Running
Aug 30, 2026
Cirque Series Arapahoe Basin
Trail Running
Sep 5, 2026
Breckenridge
2026 Lake Nighthorse Triathlon - Sprint and Olympic
Triathlon / Multisport
Sep 12, 2026
Durango
The Denver 5K
Road Running
Sep 12, 2026
Denver
Run Rabbit Run
Trail Running
Sep 18, 2026
Steamboat Springs
Pikes Peak Marathon + Ascent
Trail Running
Sep 19, 2026
Colorado Springs
Valkyrie Relay
Triathlon / Multisport
Sep 19, 2026
Durango
Fall Equinox Marathon, Half Marathon & 5 Mile
Road Running
Sep 20, 2026
Fort Collins
2026 Night Nation Run - Denver, CO
Road Running
Sep 26, 2026
Denver
West Line Winder
Trail Running
Sep 26, 2026
Buena Vista
Sangre de Cristo Trail Festival
Trail Running
Sep 26, 2026
The Elevation Everest Race
Trail Running
Sep 26, 2026
Winter Park
WILD Wahatoya Runs
Trail Running
Sep 26, 2026
Last Call Triathlon
Triathlon / Multisport
Sep 27, 2026
Loveland
Sawatch Ascent
Trail Running
Sep 27, 2026
Boulderthon, presented by PUMA
Road Running
Sep 27, 2026
Boulder
Colorado Springs Marathon, Half, 5K, and Kids K
Road Running
Oct 3, 2026
Colorado Springs
The Ruff Run
Trail Running
Oct 3, 2026
Loveland
2026 SKECHERS Hot Chocolate Run - Denver
Road Running
Oct 4, 2026
Denver
Long View Marathon & Half
Road Running
Oct 10, 2026
Fort Collins
Westy Half & 5K
Road Running
Oct 11, 2026
Westminster
Indian Creek Trail Runs
Trail Running
Oct 17, 2026
Denver
The Great Trailhead Foot Race
Trail Running
Oct 17, 2026
Lakewood
Narrowleaf Lake & Pumpkin Run
Road Running
Oct 31, 2026
Loveland
City Park 5k & 1 Mile Walk of Hope for Pancreatic Cancer Research
Road Running
Nov 7, 2026
Denver
Winterfest 5k
Road Running
Dec 12, 2026
Thornton

featured events

Cinco de Mayo
May 3, 2026
/
Portland
Oliver Triathlon
Jun 6, 2026
/
Oliver
The Presidio Half Marathon, 10K, 5K
Jun 21, 2026
/
San Francisco
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