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

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

Centennial, Colorado, United States

Dec 26, 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

Dec 26, 2026 (Sat)

$30.00 - $45.00

Running

5K 10K Half-Marathon 1.6K +2

All-Out Polar Prowl

Arvada, Colorado, United States

Jan 9, 2027 (Sat)

$25.00 - $70.00

Running

Half-Marathon 10K 5K +2

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

Centennial, Colorado, United States

Jan 16, 2027 (Sat)

$30.00 - $45.00

Running

5K 10K Half-Marathon 1.6K +2

Coffee Lover Run Denver/Aurora

Centennial, Colorado, United States

Jan 30, 2027 (Sat) – Apr 24, 2027

$30.00 - $45.00

Running

5K 10K Half-Marathon 1.6K +8

Run for Donut Denver/Aurora

Centennial, Colorado, United States

Jan 30, 2027 (Sat)

$30.00 - $45.00

Running

5K 10K Half-Marathon 1.6K +2

Stories Trail Runs

Colorado Springs, Colorado, United States

Feb 6, 2027 (Sat) – Feb 7, 2027

$60.00 - $100.00

Trail running, Running

10.8K Half-Marathon 31.5K

All-Out Mardi Crawl

Arvada, Colorado, United States

Feb 6, 2027 (Sat)

$20.00 - $65.00

Running

Half-Marathon 10K 5K +2

Valentine's Day Run 5K/10K/13.1 Denver/Aurora

Centennial, Colorado, United States

Feb 13, 2027 (Sat)

$30.00 - $45.00

Running

5K 10K Half-Marathon 1.6K +2

Run for Chocolate 5k/10k/13.1 Denver/Aurora

Centennial, Colorado, United States

Feb 13, 2027 (Sat)

$30.00 - $45.00

Running

5K 10K Half-Marathon 1.6K +2

The Toyota Super Half Marathon™& Game Day 5K™

Colorado Springs, Colorado, United States

Feb 14, 2027 (Sun)

$35.00 - $70.00

Running

Half-Marathon 5K

22nd Annual Run Through Time Trail Marathon and Half Marathon

Salida, Colorado, United States

Mar 13, 2027 (Sat)

Trail running, Running

Marathon Half-Marathon 3.2K