5K races in Colorado, United States — 2026 running calendar

Dec

19

Sweaty Sweater 5k

Fort Collins, Colorado, United States

$5.00 - $42.00

Running

5K 1.6K

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

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

31

Resolution Run - Fort Collins

Fort Collins, Colorado, United States

$25.00

Running

5K

Dec

31

Hands & Voices New Year Virtual 5K: Trails to the Summit

Boulder, Colorado, United States

$35.00

Running

5K

Jan

01

Resolute Runner 5k

Arvada, Colorado, United States

$39.00

Running

5K

Jan

01

Salida New Year's Day 5K

Salida, Colorado, United States

$24.00 - $44.00

Running

5K

Jan

01

Rescue Run

Colorado Springs, Colorado, United States

$30.00

Running

5K 10K

Jan

02

Ymca of Pueblo Hot Chocolate 5K

Pueblo, Colorado, United States

$30.00

Running

5K

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

09

Sentinel Flurry

Golden, Colorado, United States

$25.00 - $30.00

Running

1.6K 5K 6.6K

Jan

09

All-Out Polar Prowl

Arvada, Colorado, United States

$35.00 - $80.00

Running

Half-Marathon 10K 5K +2