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Half Marathons Found In Colorado in July

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Half Marathons in Colorado in July 2025

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

Race Calendar: Half Marathons Found In July

πŸš€Boosted

Summer Splash Prairie Dog Half, 10k, & 5k

Castle Rock, Colorado
19 Jul 25
$40.00 - $80.00
πŸš€Boosted

Aspen Valley Marathon

Aspen, Colorado
19 Jul 25
$75.45 - $234.45
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Denver, CO Galloway Training Program

Denver, Colorado
20 Apr 24 - 05 Nov 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 - 30 Dec 25
Free

Fleet Feet Denver Fall Half-Marathon Twelve-Week Training Program

Littleton, Colorado
08 Jul 25 - 28 Sep 25
$155.00

The Alma Foundation Race in the Clouds Dirt Festival

Alma, Colorado
10 Jul 25 - 13 Jul 25
Free - $133.50

All-Out Dog Days

Westminster, Colorado
12 Jul 25
$32.80 - $69.90

Summer Splash Prairie Dog Half, 10k, & 5k

Castle Rock, Colorado
19 Jul 25
$40.00 - $80.00

Aspen Valley Marathon

Aspen, Colorado
19 Jul 25
$75.45 - $234.45

Prairie Dog Run Series

Louisville, Colorado
26 Jan 25 - 27 Sep 25
$900.00

Platte River Half-Marathon and Relay

Littleton, Colorado
13 Apr 25 - 12 Apr 26
$80.50 - $268.75
Showing 1-10 of 10 results