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

May

23

Run for Mental Health 5K/10K/13.1 Denver/Aurora

Centennial, Colorado, United States

$30.00 - $45.00

Running

5K 10K Half-Marathon 1.6K +14

May

23

Memorial Day Run 5K/10K/13.1 DENVER/AURORA

Centennial, Colorado, United States

Running

5K 10K Half-Marathon 1.6K +2

May

22

8th Annual Angel Run at Red Leg Brewing

Colorado Springs, Colorado, United States

Running

5K 10K +2

May

16

Spirit Challenge Run for Autism 10k and 5k

Steamboat Springs, Colorado, United States

Running

10K 5K

May

16

Black Canyon Ascent

Montrose, Colorado, United States

Running Walking

9.7K

May

10

Hometown Half Marathon & 5k/10k - Denver

Littleton, Colorado, United States

Running

1.6K 5K 10K Half-Marathon +1

May

10

Super Mom 5K/10K/Half - Colorado Springs

Colorado Springs, Colorado, United States

Running

5K 10K Half-Marathon +5

May

09

Hometown Half Marathon & 5k/10k - Colorado Springs

Colorado Springs, Colorado, United States

Running

5K 10K Half-Marathon 1.6K +2

May

02

Cinco De Mayo Run 5K/10K/13.1 DENVER/AURORA

Centennial, Colorado, United States

Running

5K 10K Half-Marathon 1.6K +2

May

02

Sunrise Marathon 5K/10K/13.1 DENVER/AURORA

Centennial, Colorado, United States

Running

5K 10K Half-Marathon 1.6K +2

May

02

High Line Canal 5K/10K Run

Centennial, Colorado, United States

Running

10K 5K

Mar

28

Race Through Colorado 1M, 5K, 10K, 13.1, 26.2 - Now Only $20!

Denver, Colorado, United States

$20.00

Running

1.6K 5K 10K Half-Marathon +1