Running Races in CO, United States 2026
Browse upcoming running races in United States. Find dates, distances, and registration links.
197 upcoming races
Upcoming Races
Running
Blue Sky Trail Marathon & Half Marathon
Oct 17-18, 2026Fort Collins, USA
Run 42 m
Running
Apex Foundation Trick or Trot 5K & Halloween Hunt
Oct 24, 2026Arvada, USA
Run 5 m
Running
Bridge Burner Ultra
Oct 24, 2026Canon City, USA
Running
Beware the Bear Trail Races
Oct 25, 2026Lakewood, USA
Running
Halloween Trick or Trot Run 5K/10K/13.1 DENVER/AURORA
Oct 31, 2026Aurora, USA
Run 5 m
Running
PB&J Fuel Run 5K/10K/13.1 DENVER/AURORA
Oct 31, 2026Aurora, USA
Run 5 m
Running
All-Out Kooky-Spooky
Nov 1, 2026Golden, USA
Running
Marathon At The MAC
Nov 7, 2026Castle Rock, USA
Run 42 m
Running
Kessel Run Ultra
Nov 7, 2026Fruita, USA
Running
Alamosa Veterans Memorial Park Race
Nov 7, 2026Alamosa, USA
Running
Bell Ringer 2 Miler
Nov 7, 2026Loveland, USA
Running
City Park Classic (5k/10k & 1 Mile Walk of Hope for Pancreatic Cancer Research)
Nov 7, 2026Denver, USA
Run 5 m
Running
Colorado 24 Hour Run
Nov 7-8, 2026Fort Collins, USA
Running
Colorado Springs Veterans Day 5k
Nov 8, 2026Colorado Springs, USA
Run 5 m
Running
Canya Cañon Trail Race & Hike
Nov 8, 2026Colorado Springs, USA
Running
Louisville Trail Race
Nov 14, 2026Louisville, USA
Running
Colorado State Youth Cross Country Championships
Nov 14, 2026Aurora, USA
Running
Denver Veterans Day Run
Nov 14, 2026Denver, USA
Running
Run for Mental Health 5K/10K/13.1 DENVER/AURORA
Nov 14, 2026Aurora, USA
Run 5 m
Running
Colorado Cold Rush Ultra
Nov 21, 2026Colorado Springs, USA