Endurance Races in CO, United States 2026
Browse upcoming endurance races in United States. Find dates, distances, and registration links.
207 upcoming races
Upcoming Races
Running
Chile & Frijole Hot to Trot 5K & 10K
Sep 20, 2026Pueblo, USA
Run 5 m
Running
18th Annual Be Ovary Aware 5k run 3k walk
Sep 20, 2026Colorado Springs, USA
Run 5 m
Running
CG Adventure Club - Elevation Everest
Sep 23-27, 2026Winter Park, USA
Running
Boggy Draw Bear Chase
Sep 25, 2026Dolores, USA
Running
Crested Butte Ultra
Sep 26, 2026Crested Butte, USA
Running
WILD Wahatoya Runs
Sep 26, 2026La Veta, USA
Running
Deep Creek Trail Half Marathon
Sep 26, 2026Telluride, USA
Run 21 m
Cycling
Denver Rotary Club Cycling to Serve 2026
Sep 26, 2026Denver, USA
Running
Run for Donuts 5K/10K/13.1 DENVER/AURORA
Sep 26, 2026Aurora, USA
Run 5 m
Triathlon
25th Annual Black Canyon Triathlon
Sep 26, 2026Montrose, USA
Running
24 Hours of Palmer Lake
Sep 26, 2026Palmer Lake, USA
Running
14er Fest 14K & 5K
Sep 27, 2026Buena Vista, USA
Run 14 m
Running
Colorado Coyotes Youth XC Invitational
Sep 27, 2026Cenennial, USA
Running
The Bear Chase
Oct 3-4, 2026Lakewood, USA
Running
Rut Run 5k
Oct 3, 2026Estes Park, USA
Run 5 m
Running
Above the Clouds Ultra
Oct 3, 2026Woodland Park, USA
Running
Sage Burner Trail Race
Oct 3, 2026Gunnison, USA
Running
Grand Valley Backyard
Oct 3, 2026Loma, USA
Running
Big Waves Family 5K run/walk Presented by Brumate
Oct 3, 2026Westminster, USA
Run 5 m
Running
Colorado Springs Marathon, Half, 5K, and Kids K
Oct 3, 2026Colorado Springs, USA
Run 42 m