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Half Marathons Found In Colorado in Fall

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Half Marathons in Colorado in Fall 2025

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

Race Calendar: Half Marathons Found In Fall

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Denver, CO Galloway Training Program

Denver, Colorado
Sat 20 Apr 24 - Wed 05 Nov 25
$91.10 - $274.00
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Run for Coffee Lovers 5K/10K/13.1 DENVER/AURORA

Centennial, Colorado
Sat 29 Nov 25
$32.80 - $48.70
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Denver, CO Galloway Training Program

Denver, Colorado
Sat 20 Apr 24 - Wed 05 Nov 25
$91.10 - $274.00

Fifty States Half Marathon Club General Membership

Colorado Springs, Colorado
Thu 02 May 24 - Sun 02 Apr 34
$91.10

2025 Team CKF Running Series

Aspen, Colorado
Sat 22 Feb 25 - Tue 30 Dec 25
Free

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

Colorado Springs, Colorado
Sat 04 Oct 25 - Sat 03 Oct 26
Free - $535.35

The Long View Marathon

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

Breckenridge Road Marathon

Breckenridge, Colorado
Sat 11 Oct 25
$32.80 - $144.10

Westy Half & 5k

Westminster, Colorado
Sun 12 Oct 25
$50.00 - $75.00

Pedal 4 Possible: At the Raceway

Golden, Colorado
Sat 18 Oct 25
$54.00 - $128.20

Mancos Cowboy Half Marathon, 5K, and Fun Run

Mancos, Colorado
Sat 18 Oct 25
Free - $91.10

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

Centennial, Colorado
Sat 01 Nov 25
$32.80 - $52.94

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

Centennial, Colorado
Sat 01 Nov 25
$32.80 - $52.94

All-Out Kooky-Spooky

Golden, Colorado
Sun 02 Nov 25
$43.40 - $80.50

HRCA Backcountry Wilderness Half Marathon

Lone Tree, Colorado
Sat 08 Nov 25
$80.75

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

Centennial, Colorado
Sat 15 Nov 25
$32.80 - $52.94

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

Centennial, Colorado
Sat 15 Nov 25
$32.80 - $52.94

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

Arvada, Colorado
Sat 22 Nov 25
$29.00 - $74.00

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

Centennial, Colorado
Sat 29 Nov 25
$32.80 - $48.70

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

Centennial, Colorado
Sat 29 Nov 25
$32.80 - $48.70

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

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

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

Centennial, Colorado
Sat 18 Oct 25
$32.80 - $52.94

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

Centennial, Colorado
Sat 18 Oct 25
$32.80 - $52.94

2025 Rim Rock Marathon and Half Marathon

Fruita, Mesa
Sun 02 Nov 25
$122.09 - $132.69
Showing 1-22 of 22 results