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Half Marathons Found In Colorado

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Half Marathons in Colorado 2026 - 2027

The most comprehensive list of Half Marathons in and near Colorado in 2026 - 2027. 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

πŸš€Boosted

Steamboat Marathon

Steamboat Springs, Colorado
Sun 06 Jun 27
Free - $140.60
πŸš€Boosted

Spring Equinox

Wellington, Colorado
Sun 21 Mar 27
$39.03 - $86.95
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All-Out Spring Fever

Golden, Colorado
Sun 21 Mar 27
$27.50 - $75.20

Always Hope Easter Run DENVER/AURORA

Centennial, Colorado
Sat 27 Mar 27
$32.80 - $48.70

SuperHeroes Run DENVER/AURORA

Centennial, Colorado
Sat 27 Mar 27
$32.80 - $48.70

Three Creeks Half Marathon

Englewood, Colorado
Sun 04 Apr 27
$69.90 - $107.00

Run for PB&J 5k/10k/13.1 DENVER/AURORA

Centennial, Colorado
Sat 10 Apr 27
$32.80 - $48.70

Run Through The Decades 6K/7K/8K/Half - Colorado Springs

Colorado Springs, Colorado
Sat 10 Apr 27
$33.60 - $54.10

Sloth Run 5K/10K/13.1 DENVER/AURORA

Centennial, Colorado
Sat 10 Apr 27
$32.80 - $48.70

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

Arvada, Colorado
Sun 11 Apr 27
$39.00 - $74.00

Platte River Half-Marathon, Relay & 5k

Littleton, Colorado
Sun 11 Apr 27
$48.70 - $186.50

Horsetooth Half Marathon - Presented by Fort Collins Connexion

Fort Collins, Colorado
Sun 18 Apr 27
$101.70

Coffee Lovers Run DENVER/AURORA

Centennial, Colorado
Sat 24 Apr 27
$32.80 - $48.70

DoNot Stop Half Marathon/5K/10K - Colorado Springs

Colorado Springs, Colorado
Sat 24 Apr 27
Free - $52.28

Bigfoot Half Marathon

Estes Park, Colorado
Sat 24 Apr 27
$33.35 - $129.65

Run for Donuts DENVER/AURORA

Centennial, Colorado
Sat 24 Apr 27
$32.80 - $48.70

All-Out Beat the Heat

Westminster, Colorado
Sat 24 Apr 27
$22.20 - $69.90

DoNot Stop Half Marathon/5K/10K - Denver

Denver, Colorado
Sun 25 Apr 27
Free - $59.10

The Colorado Marathon

Fort Collins, Colorado
Sun 02 May 27
$48.70 - $170.60

Longmont Half & 5k (LM Half)

Longmont, Colorado
Sun 02 May 27
$39.00 - $64.00

Hometown Half Marathon/5K/10K - Colorado Springs

Colorado Springs, Colorado
Sat 08 May 27
Free - $46.28

Run for Chocolate 5k/10k/13.1 DENVER/AURORA

Centennial, Colorado
Sat 08 May 27
$32.80 - $48.70

Hometown Half Marathon/5K/10K - Denver

Denver, Colorado
Sun 09 May 27
Free - $59.10

Farish Trail Race

Woodland Park, Colorado
Sat 22 May 27
Free - $70.89

SuperHeroes Run DENVER/AURORA

Centennial, Colorado
Sat 29 May 27
$32.80 - $48.70

Steamboat Marathon

Steamboat Springs, Colorado
Sun 06 Jun 27
Free - $140.60

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

Louisville, Colorado
Sun 06 Jun 27
$39.00 - $64.00

All-Out Summer Breeze

Arvada, Colorado
Sat 12 Jun 27
$22.20 - $69.90

Red, White and Brew 5k, 10k & Half Marathon

Windsor, Colorado
Sat 19 Jun 27
$20.08 - $73.08

Run Juneteenth Day 5K/10K/13.1 DENVER/AURORA

Centennial, Colorado
Sat 19 Jun 27
$32.80 - $48.70

Race in the Clouds - Alma Dirt Festival 2027

Alma, Colorado
Fri 25 Jun 27 - Sat 26 Jun 27
Free - $96.40

All-Out Dog Days

Westminster, Colorado
Sat 10 Jul 27
$22.20 - $69.90

Heatwave Half Marathon/5K/10K - Denver

Denver, Colorado
Sat 17 Jul 27
Free - $59.10

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

Castle Rock, Colorado
Sat 17 Jul 27
$39.00 - $74.00
4.0

Heatwave Half Marathon/5K/10K - Colorado Springs

Colorado Springs, Colorado
Sun 18 Jul 27
Free - $46.28

All-Out Runapalooza

Arvada, Colorado
Sat 07 Aug 27
$22.20 - $69.90

Erie Half & 5k

Erie, Colorado
Sun 15 Aug 27
$39.00 - $64.00

Byers Peak Stampede Half Marathon & 5K Run

Fraser, Colorado
Sat 21 Aug 27
$48.70 - $69.90

Pioneer Prairie Dog Half, 10k & 5k

Westminster, Colorado
Sun 22 Aug 27
$39.00 - $74.00

Labor Day Half Marathon

Parker, Colorado
Mon 06 Sep 27
$34.40 - $77.60

Golden Harvest Half Marathon & 5K/10K - Denver

Denver, Colorado
Sat 11 Sep 27
Free - $59.10

Golden Harvest Half Marathon & 5K/10K - Colorado Springs

Colorado Springs, Colorado
Sun 12 Sep 27
Free - $46.28
Showing 41-80 of 97 results