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Half Marathons Found In Denver, Colorado

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Half Marathons in & near Denver, Colorado 2025 - 2026

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

Race Calendar: Half Marathons Found In Denver, Colorado

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Slacker Half Marathon-Relay-4-Mile Races

Georgetown, Colorado
01 Jan 25 - 28 Jun 25
$38.10 - $160.00
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Father's Day Fun Run 5K/10K/13.1 DENVER/AURORA

Centennial, Colorado
14 Jun 25
$32.80 - $52.94
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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

Slacker Half Marathon-Relay-4-Mile Races

Georgetown, Colorado
01 Jan 25 - 28 Jun 25
$38.10 - $160.00

2025 Team CKF Running Series

Aspen, Colorado
22 Feb 25 - 30 Dec 25
Free

2.2 for 22q Walk/Run/Ride 2025

Anywhere, Colorado
31 May 25 - 08 Jun 25
$24.32

All-Out Summer Breeze

Arvada, Colorado
07 Jun 25
$48.70 - $85.80

Louise Hammond Memorial Beardance Run

Towaoc, Colorado
07 Jun 25
$22.20 - $43.40

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

Windsor, Colorado
21 Jun 25
$16.90 - $128.20

Hometown Half Marathon & 5k/10k - Denver

Westminster, Colorado
21 Jun 25
$20.83 - $65.46

Hometown Half Marathon & 5k/10k - Colorado Springs

Colorado Springs, Colorado
22 Jun 25
$20.83 - $65.46

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

Centennial, Colorado
05 Jul 25
$32.80 - $52.94

July 4th Freedom Run 5K/10K/13.1 DENVER/AURORA

Centennial, Colorado
05 Jul 25
$32.80 - $52.94

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

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

Boulderthon Half Marathon Training Program

Boulder, Colorado
09 Jul 25 - 28 Sep 25
$150.00

All-Out Dog Days

Westminster, Colorado
12 Jul 25
$43.40 - $80.50

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
$80.75 - $245.05

Rocky Mountain Half Marathon & 5K

Estes Park, Colorado
01 Aug 25 - 02 Aug 25
Free - $234.20

Hero Hustle Half Marathon Colorado Springs

Colorado Springs, Colorado
02 Aug 25
$13.83 - $54.28

Popsicle 5K/10K/Half - Colorado Springs

Colorado Springs, Colorado
02 Aug 25
$39.10 - $65.20

Run for Wine & Cheese 5K/10K/13.1 DENVER/AURORA

Centennial, Colorado
02 Aug 25
$32.80 - $48.70

All-Out Runapalooza

Arvada, Colorado
02 Aug 25
$43.40 - $80.50

Singles & Friends Running Club 5K/10K/13.1 DENVER/AURORA

Centennial, Colorado
02 Aug 25
$32.80 - $48.70

Bound for Boston Marathon & Half Marathon - Denver

Denver, Colorado
03 Aug 25
$49.10 - $102.70

Choice City Running Festival

Fort Collins, Colorado
08 Aug 25
Free - $65.65

Erie Half & 5k

Erie, Colorado
17 Aug 25
$45.00 - $70.00

Byers Peak Stampede Half Marathon & 5K Run

Fraser, Colorado
23 Aug 25
$64.60 - $85.80

TBK Bank Thirsty 13 Half Marathon

Durango, Colorado
23 Aug 25
$101.70 - $136.68

Staunton Rocks! Marathon and Half Marathon

Pine, Colorado
23 Aug 25
$107.00 - $128.20

Arrowhead Half Marathon & 5K

Edwards, Eagle
23 Aug 25
$32.00 - $52.00

Sunrise Marathon 5K/10K/13.1 DENVER/AURORA

Centennial, Colorado
30 Aug 25
$32.80 - $48.70

Calarat Challenge Trail Running Festival

Jamestown, Colorado
30 Aug 25 - 31 Aug 25
$17.51 - $86.90

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

Centennial, Colorado
30 Aug 25
$32.80 - $48.70

Labor Day Half Marathon

Parker, Colorado
01 Sep 25
$37.64 - $83.00

Black Squirrel Half Marathon

Bellvue, Colorado
06 Sep 25
$107.00

All-Out Fall Fest

Westminster, Colorado
13 Sep 25
$32.80 - $69.90

National Chocolate Day: Run for Chocolates DENVER/AURORA

Centennial, Colorado
13 Sep 25
$32.80 - $48.70

Trail Sisters Women's Half Marathon & 10k

Buena Vista, Colorado
13 Sep 25
$69.90 - $107.00

Spooky Sprint - Colorado Springs

Colorado Springs, Colorado
13 Sep 25
$20.83 - $59.10

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

Centennial, Colorado
13 Sep 25
$32.80 - $48.70
Showing 1-40 of 93 results
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