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

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

Centennial, Colorado, United States

28 Nov, 2026 (Sat)

$30.00 - $45.00

Running

5K 10K Half-Marathon 1.6K +2

All-Out Fa La La

Westminster, Colorado, United States

05 Dec, 2026 (Sat)

$20.00 - $65.00

Running

Half-Marathon 10K 5K +2

Rock Canyon Half Marathon- 40th Anniversary Run!

Pueblo, Colorado, United States

06 Dec, 2026 (Sun)

$35.00 - $55.00

Running

Half-Marathon 5K

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

Centennial, Colorado, United States

12 Dec, 2026 (Sat)

$30.00 - $45.00

Running

5K 10K Half-Marathon 1.6K +2

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

Centennial, Colorado, United States

26 Dec, 2026 (Sat)

$30.00 - $45.00

Running

5K 10K Half-Marathon 1.6K +2

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

Centennial, Colorado, United States

26 Dec, 2026 (Sat)

$30.00 - $45.00

Running

5K 10K Half-Marathon 1.6K +2

All-Out Polar Prowl

Arvada, Colorado, United States

09 Jan, 2027 (Sat)

$20.00 - $65.00

Running

Half-Marathon 10K 5K +2

All-Out Mardi Crawl

Arvada, Colorado, United States

06 Feb, 2027 (Sat)

$20.00 - $65.00

Running

Half-Marathon 10K 5K +2

Stories Trail Runs

Colorado Springs, Colorado, United States

06 Feb, 2027 (Sat) – 07 Feb, 2027

$60.00 - $100.00

Trail running, Running

10.8K Half-Marathon 31.5K

22nd Annual Run Through Time Trail Marathon and Half Marathon

Salida, Colorado, United States

13 Mar, 2027 (Sat)

Trail running, Running

Marathon Half-Marathon 3.2K

Lucky Brew Race 5K, 10K, 15k & Half Marathon

Severance, Colorado, United States

14 Mar, 2027 (Sun)

$15.00 - $70.00

Running

5K 10K 15K 1K +1

All-Out Spring Fever

Golden, Colorado, United States

21 Mar, 2027 (Sun)

$20.00 - $65.00

Running

Half-Marathon 10K 5K +2