Running Races in Colorado, United States 2026 127 events
Browse upcoming running races in United States. Find dates, distances, and registration links.
Upcoming races
RunningIn 5 weeks
Big Waves Family 5K run/walk Presented by Brumate
◎ Westminster, USA▤ Oct 3, 2026
5 km
RunningIn 5 weeks
Colorado Springs Marathon, Half, 5K, and Kids K
◎ Colorado Springs, USA▤ Oct 3, 2026
42.2 km
RunningIn 5 weeks
Rut Run 5k
◎ Estes Park, USA▤ Oct 3, 2026
5 km
RunningIn 5 weeks
Boulder Marathon
◎ Boulder, USA▤ Oct 4, 2026
42.195 km
RunningIn 6 weeks
Bagel Run 5K/10K/13.1 DENVER/AURORA
◎ Centennial, USA▤ Oct 10, 2026
5 km
RunningIn 6 weeks
Breckenridge RunFest
◎ Breckenridge, USA▤ Oct 10-11, 2026
RunningIn 6 weeks
Dialysis Dash 5K
◎ Grand Junction, USA▤ Oct 10, 2026
5 km
RunningIn 6 weeks
Durango Marathon
◎ Durango, USA▤ Oct 11, 2026
42.2 km
RunningIn 7 weeks
Bobcat Trail Races
◎ Colorado Springs, USA▤ Oct 17, 2026
RunningIn 7 weeks
Blue Sky Trail Marathon & Half Marathon
◎ Fort Collins, USA▤ Oct 17-18, 2026
42.2 km
RunningIn 8 weeks
Apex Foundation Trick or Trot 5K & Halloween Hunt
◎ Arvada, USA▤ Oct 24, 2026
5 km
RunningIn 8 weeks
Bridge Burner Ultra
◎ Canon City, USA▤ Oct 24, 2026
RunningIn 8 weeks
Beware the Bear Trail Races
◎ Lakewood, USA▤ Oct 25, 2026
RunningIn 9 weeks
Halloween Trick or Trot Run 5K/10K/13.1 DENVER/AURORA
◎ Aurora, USA▤ Oct 31, 2026
5 km
RunningIn 9 weeks
PB&J Fuel Run 5K/10K/13.1 DENVER/AURORA
◎ Aurora, USA▤ Oct 31, 2026
5 km
RunningIn 9 weeks
All-Out Kooky-Spooky
◎ Golden, USA▤ Nov 1, 2026
RunningIn 2 months
Marathon At The MAC
◎ Castle Rock, USA▤ Nov 7, 2026
42.2 km
RunningIn 2 months
Kessel Run Ultra
◎ Fruita, USA▤ Nov 7, 2026
RunningIn 2 months
Alamosa Veterans Memorial Park Race
◎ Alamosa, USA▤ Nov 7, 2026
RunningIn 2 months
Bell Ringer 2 Miler
◎ Loveland, USA▤ Nov 7, 2026
Also in United States
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