Half Marathons in Colorado in Summer 2025

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

Louisville, Colorado

01 Jun 25

$33.50 - $64.60

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All-Out Summer Breeze

Arvada, Colorado

07 Jun 25

$27.50 - $64.60

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

Windsor, Colorado

21 Jun 25

$16.90 - $101.70

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Hometown Half Marathon & 5k/10k - Denver

Denver, Colorado

21 Jun 25

$18.83 - $44.28

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

Colorado Springs, Colorado

22 Jun 25

$18.83 - $44.28

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All-Out Dog Days

Westminster, Colorado

12 Jul 25

$27.50 - $64.60

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The Alma Foundation Race in the Clouds Dirt Festival

Alma, Colorado

12 Jul 25

Free - $69.90

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

Castle Rock, Colorado

19 Jul 25

$33.50 - $75.20

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All-Out Runapalooza

Arvada, Colorado

02 Aug 25

$27.50 - $64.60

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Erie Half & 5k

Erie, Colorado

17 Aug 25

$33.50 - $59.30

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Fifty States Half Marathon Club General Membership

Colorado Springs, Colorado

02 May 24 - 02 Apr 34

$91.10

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Sheep Mountain Trail Runs

Fairplay, Colorado

02 Aug 25

$75.20 - $160.00

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