10K races in Colorado, United States — 2026 running calendar

Aug

15

Run for PB& J 5K/10K/13.1 DENVER/AURORA

Centennial, Colorado, United States

Running

5K 10K Half-Marathon 1.6K +2

Aug

15

Cookie Run 5K/10K/13.1 Denver/Aurora

Centennial, Colorado, United States

Running

5K 10K Half-Marathon 1.6K +8

Aug

07

Choice City Running Festival

Fort Collins, Colorado, United States

Running Walking

1.6K 5K 10K Half-Marathon +7

Jul

25

Run for Donuts 5K/10K/13.1 Denver/Aurora

Centennial, Colorado, United States

Running

5K 10K Half-Marathon 1.6K +8

Jul

25

Christmas 5K/10K/Half Marathon in July Meet Up - Denver

Littleton, Colorado, United States

Running

5K 10K Half-Marathon

Jul

25

Run for Coffee Lovers 5K/10K/13.1 DENVER/AURORA

Centennial, Colorado, United States

Running

5K 10K Half-Marathon 1.6K +2

Jul

12

Heatwave Half Marathon - Colorado Springs

Colorado Springs, Colorado, United States

Running

1.6K 5K 10K Half-Marathon +1

Jul

11

Heatwave Half Marathon - Denver

Littleton, Colorado, United States

Running

1.6K 5K 10K Half-Marathon +1

Jul

04

Run for Chocolate 5K/10K/13.1 DENVER/AURORA

Centennial, Colorado, United States

Running

5K 10K Half-Marathon 1.6K +2

Jul

04

Ourayce 10K Fun Run

Ouray, Colorado, United States

Running

10K

Jul

04

July 4th Run 5K/10K/13.1 DENVER/AURORA

Centennial, Colorado, United States

Running

5K 10K Half-Marathon 1.6K +2

Jun

27

SBT TRL

Steamboat Springs, Colorado, United States

Running

10K 5K