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

Sep

26

Parker Parks and Recreation So Long to Summer 5K/10K

Parker, Colorado, United States

Running

5K 10K

Sep

20

Chile & Frijole Hot to Trot 5K & 10K

Pueblo, Colorado, United States

Running

5K 10K

Sep

20

20th Annual Golden Gallop

Golden, Colorado, United States

Running

5K 10K 20K

Sep

19

Beulah Challenge and OverIt Series

Beulah, Colorado, United States

Running

Half-Marathon 10K 5K +2

Sep

19

Wellington STAR Foundation 5K 10K

Wellington, Colorado, United States

Running

5K 10K +2

Sep

13

RMRR September Trophy Series

Thornton, Colorado, United States

Running

10K 5K

Sep

12

National Chocolate Day: Run for Chocolates 5K/10K/13.1 DENVER/AURORA

Centennial, Colorado, United States

Running

5K 10K Half-Marathon 1.6K +2

Sep

10

14th Annual Superhero Event

Greeley, Colorado, United States

Running

10K 5K 1.6K Kid's Fun Run (Ages 6 & Under) +5

Sep

05

The Beaver Run

Breckenridge, Colorado, United States

Running

5K 10K 15K 0.2K

Aug

29

Run to Breast Cancer 5K/10K/13.1 DENVER/AURORA

Centennial, Colorado, United States

Running

5K 10K Half-Marathon 1.6K +2

Aug

23

11th Annual Log Hill Hustle

Ridgway, Colorado, United States

Running Wheelchair

5K 10K

Aug

22

2026 True Impact Ministries 5K/10K

Centennial, Colorado, United States

Running

5K 10K