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

Dec

12

Santa Catch 5k & 10k

Windsor, Colorado, United States

$15.00 - $55.00

Running

5K 10K 1.6K

Dec

12

Sunrise Marathon 5K/10K/13.1 Denver/Aurora

Centennial, Colorado, United States

$30.00 - $45.00

Running

5K 10K Half-Marathon 1.6K +2

Dec

26

New Year's Run 5K/10K/13.1 Denver/Aurora

Centennial, Colorado, United States

$30.00 - $45.00

Running

5K 10K Half-Marathon 1.6K +2

Dec

26

A Merry Christmas Run 5K/10K/13.1 DENVER/AURORA

Centennial, Colorado, United States

$30.00 - $45.00

Running

5K 10K Half-Marathon 1.6K +2

Jan

01

Rescue Run

Colorado Springs, Colorado, United States

$30.00

Running

5K 10K

Jan

09

All-Out Polar Prowl

Arvada, Colorado, United States

$35.00 - $80.00

Running

Half-Marathon 10K 5K +2

Jan

09

Winter Series - The Coolest Race in Town!

Colorado Springs, Colorado, United States

$40.00 - $115.00

Running

Four Race Series **Long** Four Race Series **Short** 10K 5K +6

Jan

16

Mlk Jr. Freedom Run 5K/10K/13.1 Denver/Aurora

Centennial, Colorado, United States

$30.00 - $45.00

Running

5K 10K Half-Marathon 1.6K +2

Jan

17

Colorado Cold Snap

Louisville, Colorado, United States

$44.00 - $49.00

Running

5K 10K

Jan

23

Chilly Willy 5K/10K/Half Marathon - Colorado Springs

Colorado Springs, Colorado, United States

$30.00 - $60.00

Running

5K 10K Half-Marathon 13.1K +5

Jan

24

Yeti Chase 5k/10k

Morrison, Colorado, United States

$25.00 - $140.00

Running

5K 10K +1

Jan

30

Coffee Lover Run Denver/Aurora

Centennial, Colorado, United States

$30.00 - $45.00

Running

5K 10K Half-Marathon 1.6K +8