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Half Marathons Found In Colorado in May
View all ↓Half Marathons in Colorado in May 2025
Find A Race is the US's favourite event listings site. Check out our list of May 2025 Half Marathons in Colorado below.
Race Calendar: Half Marathons Found In May
πBoosted
Prairie Dog Run Series
Louisville, Colorado
26 Jan 25 - 27 Sep 25
$900.00
πBoosted
Donot Stop Half Marathon (5k/10k) - Colorado Springs
Colorado Springs, Colorado
11 May 25
$18.83 - $63.34
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Fifty States Half Marathon Club General Membership
Colorado Springs, Colorado
02 May 24 - 02 Apr 34
$91.10
Slacker Half Marathon-Relay-4-Mile Races
Georgetown, Colorado
01 Jan 25 - 28 Jun 25
$2.06 - $128.20
2025 Team CKF Running Series
Aspen, Colorado
22 Feb 25 - 25 Oct 25
Free
Fleet Feet Denver Spring Half Marathon Twelve-Week Training Program
Littleton, Colorado
25 Feb 25 - 18 May 25
$160.15
The Colorado Marathon
Fort Collins, Colorado
04 May 25
$54.00 - $379.00
Longmont Half & 5k (LM Half)
Longmont, Colorado
04 May 25
$55.00 - $80.00
DoNot Stop Half Marathon (5k/10k) - Denver
Littleton, Colorado
10 May 25
$18.83 - $63.34
Donot Stop Half Marathon (5k/10k) - Colorado Springs
Colorado Springs, Colorado
11 May 25
$18.83 - $63.34
Endure Trail Runs
Divide, Colorado
17 May 25 - 18 May 25
$75.20 - $191.80
Prairie Dog Run Series
Louisville, Colorado
26 Jan 25 - 27 Sep 25
$900.00
Showing 1-10 of 10 results