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Running in Colorado 2025 - 2026

The most comprehensive list of Colorado Running Events in 2025 - 2026. Discover 100's of US Colorado Running. Find your perfect race here!

Running Colorado 2025 - 2026

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

Colorado Springs, Colorado
04 Oct 25 - 05 Oct 25
Free - $535.35
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Not So Flatt Breast Cancer Awareness Run/Walk – 5K & 10K in Denver, CO

Westminster, Colorado
04 Oct 25
$10.00 - $40.00
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Boulderthon Half Marathon Training Program

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

Fleet Feet Denver Fall 10k Eight-Week Training Program

Littleton, Colorado
05 Aug 25 - 28 Sep 25
$110.00

Boulderthon 5k/10k Training Program

Boulder, Colorado
06 Aug 25 - 28 Sep 25
$110.00

RMRR Fall Marathon Training Series

Thornton, Colorado
24 Aug 25 - 21 Sep 25
$22.20 - $80.50

Adams 12 MS XC

Thornton, Colorado
28 Aug 25
Free

South Fork Alder Ass Race

South Fork, Colorado
30 Aug 25
$38.10 - $69.90

Summit Middle School Invitational

Breckenridge, Colorado
03 Sep 25
Free

[CANCELLED] Sloan's Lake Search Party (SLSP) Marathon Hourly Loop Race!

Denver, Colorado
14 Sep 25
$96.40

McGinn Memorial Cross Country Challenge

Pagosa Springs, Colorado
27 Sep 25
Free

Race in the Clouds - Festival 5K

Alma, Colorado
27 Sep 25
$38.10

Chicken Creek Challenge

Mancos, Colorado
11 Oct 25
Free

The bRUNch Runβ„’ -

Denver, Colorado
12 Oct 25
$43.40 - $75.20

2025 DU Crimson Classic 5K Run/1.5 Mile Walk

Denver, Colorado
14 Oct 25 - 17 Oct 25
Free

2025 Rim Rock Marathon and Half Marathon

Fruita, Mesa
02 Nov 25
$122.09 - $132.69

Team Boss CO Mile + 2 Mile 4 REAL

Niwot, Colorado
11 Nov 25
$30.00

YMCA of Pueblo Turkey Trot

Pueblo, Colorado
27 Nov 25
$32.80

2025 Summit for Life

Aspen, Colorado
06 Dec 25
$26.25 - $77.75

Sawmill Trail Runs

Pine, Colorado
06 Dec 25
$54.00 - $128.20

YMCA of Pueblo Hot Chocolate 5K

Pueblo, Colorado
27 Dec 25
$32.80

Winter Series - The Coolest Race in Town!

Colorado Springs, Colorado
10 Jan 26 - 28 Feb 26
$38.10 - $117.60

Rio Frio 5k on Ice

Alamosa, Colorado
24 Jan 26
$22.20

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

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

Stories Trail Runs

Colorado Springs, Colorado
21 Feb 26 - 22 Feb 26
$64.60 - $160.00

All Hands on Deck The Pirates 5K

Colorado Springs, Colorado
28 Mar 26
$27.50

ASDAsh 5K to Beat Tooth Decay

Aurora, Colorado
11 Apr 26
$30.00

Great Western Trail Race

Severance, Colorado
18 Apr 26
$16.90 - $69.90

SOAR 5K

Golden, Colorado
25 Apr 26
Free - $22.20

Friends of the National Center Science Stride 5K

Boulder, Colorado
01 May 26
$54.88

Endure Trail Runs

Divide, Colorado
16 May 26
$54.00 - $128.20

2025 MTHCF 5K

Fruita, Colorado
30 May 26
$38.10
5.0

Summits Trail Runs

Granby, Colorado
06 Jun 26
$54.00 - $149.40

J-Town Jog 5K and Youth Mile

Johnstown, Colorado
06 Jun 26
$22.20 - $32.80

Aiden's Adventure 5k

Colorado Springs, Colorado
06 Jun 26
$22.20 - $45.52

Palmer Lake July 4th - 4M

Palmer Lake, Colorado
04 Jul 26
$27.75 - $48.95

Kennebec Mountain Run

Hesperus, Colorado
01 Aug 26
$80.50

Unicorn 5k (South)

Highlands Ranch, Colorado
01 Aug 26
$16.50 - $35.00

Erie Half & 5k

Erie, Colorado
16 Aug 26
$33.50 - $59.30

TBK Bank Thirsty 13 Half Marathon

Durango, Colorado
29 Aug 26
$91.10 - $127.14
Showing 281-318 of 318 results
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