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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

πŸš€Boosted

Arctic Prairie Dog Half, 10k & 5k

Louisville, Colorado
18 Jan 26
$40.00 - $80.00
πŸš€Boosted

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

Castle Rock, Colorado
18 Jul 26
$30.00 - $65.00
4.0
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Chilly Willy 5K/10K/Half Marathon-Colorado Springs

Colorado Springs, Colorado
24 Jan 26
$33.60 - $65.20

2026 Team CKF Running Series

Aspen, Colorado
24 Jan 26 - 18 Apr 26
Free

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

Centennial, Colorado
07 Feb 26
$32.80 - $48.70

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

Centennial, Colorado
07 Feb 26
$32.80 - $48.70

Super Half Marathonβ„’ & Game Day 5Kβ„’ Presented by Toyota

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

Valentines Live, Love, RUN 5K/10K/13.1 DENVER/AURORA

Centennial, Colorado
14 Feb 26
$32.80 - $48.70

Ralston Creek Half Marathon & 5k

Arvada, Colorado
15 Feb 26
$27.50 - $133.50

All-Out Mardi Crawl

Arvada, Colorado
22 Feb 26
$32.80 - $69.90

Time to Paddy 5k/10k & Lucky 13.1 - Denver

Denver, Colorado
28 Feb 26
$20.83 - $50.28

Time to Paddy 5k/10k & Lucky 13.1 - Colorado Springs

Colorado Springs, Colorado
01 Mar 26
$20.83 - $50.28

St. Paddy's Day Lucky Run 5K/10K/13.1 DENVER/AURORA

Centennial, Colorado
14 Mar 26
$32.80 - $48.70

All-Out Spring Fever

Golden, Colorado
22 Mar 26
$27.50 - $64.60

Always Hope Easter Run 5K/10K/13.1 DENVER/AURORA

Centennial, Colorado
04 Apr 26
$32.80 - $48.70

Platte River Half-Marathon and Relay

Littleton, Colorado
12 Apr 26
$75.20 - $165.30

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

Arvada, Colorado
12 Apr 26
Free - $75.00

All-Out Beat the Heat

Westminster, Colorado
18 Apr 26
$27.50 - $64.60

Spring Fling - Austin

Del Valle, Texas
18 Apr 26
$18.98 - $54.31

Horsetooth Half Marathon - Presented by Fort Collins Connexion

Fort Collins, Colorado
19 Apr 26
$91.10

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
$43.40 - $149.40

Longmont Half & 5k (LM Half)

Longmont, Colorado
03 May 26
$45.00 - $70.00

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

Colorado Springs, Colorado
09 May 26
$20.83 - $46.28

Hometown Half Marathon & 5k/10k - Denver

Denver, Colorado
10 May 26
$20.83 - $46.28

The Steamboat Marathon

Steamboat Springs, Colorado
07 Jun 26
$76.40 - $135.25

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

Louisville, Colorado
07 Jun 26
$35.00 - $65.00

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
$32.80 - $101.70

All-Out Dog Days

Westminster, Colorado
11 Jul 26
$27.50 - $64.60

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

Castle Rock, Colorado
18 Jul 26
$30.00 - $65.00
4.0

Erie Half & 5k

Erie, Colorado
16 Aug 26
$33.50 - $59.30

Byers Peak Stampede Half Marathon & 5K Run

Fraser, Colorado
22 Aug 26
$54.00 - $75.20

Labor Day Half Marathon

Parker, Colorado
07 Sep 26
$34.40 - $77.60

All-Out Fall Fest

Westminster, Colorado
16 Sep 26 - 23 Sep 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

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
Showing 41-80 of 89 results