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

Black Canyon Ascent

Montrose, Colorado, United States

16 May, 2026 (Sat)

Running, Walking

9.7K

Hometown Half Marathon & 5k/10k - Denver

Littleton, Colorado, United States

10 May, 2026 (Sun)

Running

1.6K 5K 10K Half-Marathon +1

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

Colorado Springs, Colorado, United States

10 May, 2026 (Sun)

Running

5K 10K Half-Marathon +5

Colorado Women's Classic - Westminster

Westminster, Colorado, United States

10 May, 2026 (Sun)

Running

5K 10K 16.1K

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

Colorado Springs, Colorado, United States

09 May, 2026 (Sat)

Running

5K 10K Half-Marathon 1.6K +2

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

Centennial, Colorado, United States

02 May, 2026 (Sat)

Running

5K 10K Half-Marathon 1.6K +2

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

Centennial, Colorado, United States

02 May, 2026 (Sat)

Running

5K 10K Half-Marathon 1.6K +2

High Line Canal 5K/10K Run

Centennial, Colorado, United States

02 May, 2026 (Sat)

Running

10K 5K

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

Denver, Colorado, United States

28 Mar, 2026 (Sat) – 31 Dec, 2026

$20.00

Running

1.6K 5K 10K Half-Marathon +1

2026 C.O.P.S. WINTER RACE SERIES

Golden, Colorado, United States

07 Jan, 2026 (Wed) – 30 Apr, 2026

Running

5K 10K 15K