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Half Marathons Found In Colorado

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Half Marathons in Colorado 2025 - 2026

The most comprehensive list of Half Marathons in and near Colorado in 2025 - 2026. Find your perfect race!

Ready to take on a new challenge? If you're in Colorado and seeking half marathon races in neighboring states, look no further. Discover our calendars of:

Find your next great goal to chase at findarace, and choose from an extensive list of runs, swims, and cycles all over the US.

Race Calendar: Half Marathons Found In Colorado

🚀Boosted

Hedgehog Dash 5K/10K/13.1 DENVER/AURORA

Centennial, Colorado
13 Sep 25
$32.80 - $48.70
🚀Boosted

2026 Team CKF Running Series

Aspen, Colorado
24 Jan 26 - 18 Apr 26
Free
Feature your event at the top of the results

Platte River Half-Marathon and Relay

Littleton, Colorado
12 Apr 26
$75.20 - $165.30

All-Out Beat the Heat

Westminster, Colorado
18 Apr 26
$27.50 - $64.60

Horsetooth Half Marathon

Fort Collins, Colorado
19 Apr 26
$80.50

Coffee Lovers Run 5K/10K/13.1 DENVER/AURORA

Centennial, Colorado
25 Apr 26
$32.80 - $48.70

Runs With Scissors Races

Brighton, Colorado
25 Apr 26
$38.10 - $85.80

The Colorado Marathon

Fort Collins, Colorado
03 May 26
$38.10 - $138.80

Longmont Half & 5k (LM Half)

Longmont, Colorado
03 May 26
$45.00 - $70.00

Colorado 13er (Half Marathon/10k/5k)

Louisville, Colorado
07 Jun 26
$30.00 - $60.00

All-Out Summer Breeze

Arvada, Colorado
13 Jun 26
$27.50 - $64.60

Red, White and Brew 5k, 10k, Half Marathon & 12 Hour Last Person Standing

Windsor, Colorado
20 Jun 26
$16.90 - $122.90

Race in the Clouds - Alma Dirt Festival 2026

Alma, Colorado
27 Jun 26
$11.60 - $69.90

All-Out Dog Days

Westminster, Colorado
11 Jul 26
$27.50 - $64.60

50 States Half Marathon Club Life Membership

Colorado Springs, Colorado
25 Apr 31

50 States Half Marathon Club Life Membership

Colorado Springs, Colorado
26 Apr 31

Prairie Dog Run Series

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

2025 Rim Rock Marathon and Half Marathon

Fruita, Mesa
02 Nov 25
$122.09 - $132.69

Super Half Marathon™ & Game Day 5K™ Presented by Toyota

Colorado Springs, Colorado
08 Feb 26
$32.80 - $69.90

Stories Trail Runs

Colorado Springs, Colorado
21 Feb 26 - 22 Feb 26
$64.60 - $160.00

Great Western Trail Race

Severance, Colorado
18 Apr 26
$16.90 - $69.90
Showing 81-99 of 99 results
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