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Half Marathons Found In Colorado in Spring

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Half Marathons in Colorado in Spring 2025

Find A Race is the US's favourite event listings site. Check out our list of Spring 2025 Half Marathons in Colorado below.

Race Calendar: Half Marathons Found In Spring

Denver, CO Galloway Training Program

Denver, Colorado
20 Apr 24 - 15 Apr 25
$91.10 - $274.00

Fifty States Half Marathon Club General Membership

Colorado Springs, Colorado
02 May 24 - 02 Apr 34
$91.10

2025 Team CKF Running Series

Aspen, Colorado
22 Feb 25 - 25 Oct 25
Free

Time to Paddy 5k/10k & Lucky 13.1 - Denver

Denver, Colorado
01 Mar 25
$18.83 - $54.28

Time to Paddy 5k/10k & Lucky 13.1 - Colorado Springs

Colorado Springs, Colorado
02 Mar 25
$18.83 - $54.28

20th Annual Run Through Time Trail Marathon and Half Marathon

Salida, Colorado
08 Mar 25
$16.90 - $85.80

All-Out Spring Fever

Golden, Colorado
23 Mar 25
$32.80 - $69.90

Spring Equinox

Wellington, Colorado
23 Mar 25
$23.05 - $81.63

Three Creeks Half Marathon

Englewood, Colorado
13 Apr 25
$75.20 - $107.00

Platte River Half-Marathon and Relay

Littleton, Colorado
13 Apr 25
$96.40 - $207.70

Spring Fling Prairie Dog Half, 10k, & 5k

Arvada, Colorado
13 Apr 25
Free - $80.00

Horsetooth Half Marathon

Fort Collins, Colorado
13 Apr 25
$101.70

Great Western Trail Race

Severance, Colorado
19 Apr 25
$16.90 - $69.90

All-Out Beat the Heat

Westminster, Colorado
19 Apr 25
$32.80 - $69.90

NoCo Half Marathon & 10K

Loveland, Larimer County
26 Apr 25

Runs With Scissors Races

Brighton, Colorado
26 Apr 25
$38.10 - $92.16

Bigfoot Half Marathon

Estes Park, Colorado
26 Apr 25
$54.75 - $118.95

The Colorado Marathon

Fort Collins, Colorado
04 May 25
$43.40 - $154.70

Longmont Half & 5k (LM Half)

Longmont, Colorado
04 May 25
$40.00 - $65.00

DoNot Stop Half Marathon (5k/10k) - Denver

Littleton, Colorado
10 May 25
$18.83 - $48.28

Donot Stop Half Marathon (5k/10k) - Colorado Springs

Colorado Springs, Colorado
11 May 25
$18.83 - $48.28

Endure Trail Runs

Divide, Colorado
17 May 25 - 18 May 25
$75.20 - $191.80

Prairie Dog Run Series

Louisville, Colorado
12 Jan 25 - 27 Sep 25
$900.00
Showing 1-23 of 23 results