Half-Marathon races in Colorado, United States — 2026 running calendar

Oct

24

Mancos Cowboy Half Marathon, 5K, and Fun Run

Mancos, Colorado, United States

Free - $85.00

Running

Half-Marathon 5K 1.6K

Oct

31

Halloween Trick or Trot Run 5K/10K/13.1 DENVER/AURORA

Centennial, Colorado, United States

$30.00 - $45.00

Running

5K 10K Half-Marathon 1.6K +2

Oct

31

PB&J Fuel Run 5K/10K/13.1 DENVER/AURORA

Centennial, Colorado, United States

$30.00 - $45.00

Running

5K 10K Half-Marathon 1.6K +2

Nov

01

All-Out Kooky-Spooky

Golden, Colorado, United States

$40.00 - $85.00

Running

Half-Marathon 10K 5K +2

Nov

07

Turkey Trails- Denver

Littleton, Colorado, United States

$22.00 - $79.00

Running

1.6K 5K 10K Half-Marathon

Nov

08

Turkey Trails - Colorado Springs

Colorado Springs, Colorado, United States

$22.00 - $66.00

Running

1.6K 5K 10K Half-Marathon

Nov

14

Salute to Veterans 5K/10K/Half Marathon - Denver

Aurora, Colorado, United States

Free - $55.00

Running

5K 10K Half-Marathon +8

Nov

14

Veterans Day Freedom Run 5K/10K/13.1 DENVER/AURORA

Centennial, Colorado, United States

$30.00 - $45.00

Running

5K 10K Half-Marathon 1.6K +2

Nov

15

Salute to Veterans 5K/10K/Half Marathon - Colorado Springs

Colorado Springs, Colorado, United States

Free - $55.00

Running

5K 10K Half-Marathon +8

Nov

21

TURKEY TREK (13.1, 10k, 5k & 2k)

Arvada, Colorado, United States

$29.00 - $74.00

Running

Half-Marathon 10K 5K 2K

Nov

28

Thanksgiving Gobble Trot Run 5K/10K/13.1 DENVER/AURORA

Centennial, Colorado, United States

$30.00 - $45.00

Running

5K 10K Half-Marathon 1.6K +2

Dec

05

All-Out Fa La La

Westminster, Colorado, United States

$35.00 - $80.00

Running

Half-Marathon 10K 5K +2