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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

πŸš€Boosted

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

Centennial, Colorado
25 Apr 26
$32.80 - $48.70
πŸš€Boosted

All-Out Polar Prowl

Arvada, Colorado
10 Jan 26
$32.80 - $69.90
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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

Autumn Run

Buena Vista, Colorado
20 Sep 25
$38.86 - $102.91

Rim to Rim Royal Gorge Races: 5K Road Run, Trail 8 Mile, Trail Half Marathon

Canon City, Colorado
20 Sep 25 - 07 Dec 25
Free - $197.10

13th Annual Superhero Event

Greeley, Colorado
20 Sep 25 - 28 Sep 25
Free - $48.70

Beulah Challenge and OverIt Series

Beulah, Colorado
20 Sep 25
$18.25 - $213.75

Red Feather Trail Jamboree

Red Feather Lakes, Colorado
26 Sep 25 - 28 Sep 25
$117.60 - $358.00

WILD Wahatoya Runs

La Veta, Huerfano
27 Sep 25
$50.00 - $100.00

Pioneer Prairie Dog Half, 10k & 5k

Westminster, Colorado
27 Sep 25
Free - $85.00

National Singles Day: Singles & Friends Running DENVER/AURORA

Centennial, Colorado
27 Sep 25
$32.80 - $48.70

National Coffee Day: Run for Coffee DENVER/AURORA

Centennial, Colorado
27 Sep 25
$32.80 - $48.70

Run for Donuts 5K/10K/13.1 DENVER/AURORA

Centennial, Colorado
04 Oct 25
$32.80 - $52.94

Colorado Springs Marathon, Half, 5K, and Kids K

Colorado Springs, Colorado
04 Oct 25 - 05 Oct 25
Free - $535.35

Cheers to Oktoberfest Run 5K/10K/13.1 DENVER/AURORA

Centennial, Colorado
04 Oct 25
$32.80 - $52.94

Windsor Marathon, Half Marathon, 10k, 5k & 1 Mile Run

Windsor, Colorado
05 Oct 25
$20.00 - $135.00

Layafette Music Fest Half-Marathon/10K/5K

Louisville, Colorado
05 Oct 25
$32.80 - $105.94

Breckenridge Road Marathon

Breckenridge, Colorado
11 Oct 25
$33.73 - $147.14

The Long View Marathon

Fort Collins, Colorado
11 Oct 25
$48.70 - $128.20

Westy Half & 5k

Westminster, Colorado
12 Oct 25
$45.00 - $70.00

Run Against Breast Cancer 5K/10K/13.1 DENVER/AURORA

Centennial, Colorado
18 Oct 25
$32.80 - $52.94

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

Centennial, Colorado
18 Oct 25
$32.80 - $52.94

Pedal 4 Possible: At the Raceway

Golden, Colorado
18 Oct 25
$54.00 - $128.20

Mancos Cowboy Half Marathon, 5K, and Fun Run

Mancos, Colorado
18 Oct 25
Free - $69.90

Halloween Trick or Trot Run 5K/10K/13.1 DENVER/AURORA

Centennial, Colorado
01 Nov 25
$32.80 - $48.70

Run DENVER/AURORA "The Mile High City" 5K/10K/13.1 FALL

Centennial, Colorado
01 Nov 25
$32.80 - $48.70

All-Out Kooky-Spooky

Golden, Colorado
02 Nov 25
$43.40 - $80.50

HRCA Backcountry Wilderness Half Marathon

Lone Tree, Colorado
08 Nov 25
$64.85

Bed to 5K/10K/13.1 Snoozers Run DENVER/AURORA

Centennial, Colorado
15 Nov 25
$32.80 - $48.70

Veterans Day Freedom Run 5K/10K/13.1 DENVER/AURORA

Centennial, Colorado
15 Nov 25
$32.80 - $48.70

10k Turkey Trek & 5k Turkey Trot - Now With HALF MARATHON DISTANCE!

Arvada, Colorado
22 Nov 25
$29.00 - $74.00

Thanksgiving Turkey Gobble Trot 5K/10K/13.1 DENVER/AURORA

Centennial, Colorado
29 Nov 25
$32.80 - $48.70

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

Centennial, Colorado
29 Nov 25
$32.80 - $48.70

All-Out Fa La La

Westminster, Colorado
06 Dec 25
$43.40 - $80.50

Rock Canyon Half Marathon

Pueblo, Colorado
07 Dec 25
$38.10 - $59.30
5.0

Run Against Breast Cancer 5K/10K/13.1 DENVER/AURORA

Centennial, Colorado
13 Dec 25
$32.80 - $48.70

Run for Mental Health 5K/10K/13.1 DENVER/AURORA

Centennial, Colorado
13 Dec 25
$32.80 - $48.70

A Merry Christmas Run 5K/10K/13.1 DENVER/AURORA

Centennial, Colorado
27 Dec 25
$32.80 - $48.70

New Year's Run 5K/10K/13.1 DENVER/AURORA

Centennial, Colorado
27 Dec 25
$32.80 - $48.70

New Year New Me Run 5K/10K/13.1 DENVER/AURORA

Centennial, Colorado
03 Jan 26
$32.80 - $48.70
Showing 1-40 of 90 results
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