5K races in Colorado, United States — 2026 running calendar

Aug

15

Miles for Migraine Colorado

Denver, Colorado, United States

Running

3.2K 5K

Aug

09

Pancake Stampede 5K

Littleton, Colorado, United States

Running

5K

Aug

09

The Bullfrog Summer Surge

Lakewood, Colorado, United States

Running

5K 0.8K

Aug

08

Arapahoe Warrior 5K

Centennial, Colorado, United States

Running

5K

Aug

08

5K at the Fair

Durango, Colorado, United States

Running

5K

Aug

08

Escalante Days 5K

Dolores, Colorado, United States

Running

5K

Aug

07

RMRR August Trophy Series

Centennial, Colorado, United States

Running

5K

Aug

07

Choice City Running Festival

Fort Collins, Colorado, United States

Running Walking

1.6K 5K 10K Half-Marathon +7

Aug

04

Eltuck Valley 5K - Lory Summer Trail Series

Fort Collins, Colorado, United States

Running

5K

Aug

01

Move with Madd Denver 5K

Denver, Colorado, United States

Running Walking

5K Untimed Walk

Aug

01

Flying Colors 5K Fun Run/Walk

Craig, Colorado, United States

Running

5K

Aug

01

12th Annual Run for the Ring

Aurora, Colorado, United States

Running

5K