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Races in Colorado - April 2026

Browse 74+ upcoming races in Colorado for April 2026.

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Races in Colorado - April 2026

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

Apr 4, 2026
Centennial, CO
13.1M10K5K1M
60°
33°
5%

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

Apr 4, 2026
Centennial, CO
13.1M10K5K1M
60°
33°
5%

Cayson Pearson Memorial 5K Fun Run/Walk

Apr 4, 2026
Lakewood, CO
5K
62°
31°
7%

Nielson Two Mile Challenge

Apr 4, 2026
Colorado Springs, CO
2M
61°
33°
4%

Three Creeks Half Marathon

Apr 5, 2026
Denver, CO
13.1M
62°
33°
5%

Three Creeks Half Marathon

Apr 5, 2026
Englewood, CO
13.1M
60°
33°
5%

Hot Laps

Apr 9, 2026
Denver, CO
0.8HR
62°
33°
6%

Boulder Rez Half

Apr 11, 2026
Boulder, CO
13.1M10K5K
63°
34°
11%

ASDAsh 5K to Beat Tooth Decay

Apr 11, 2026
Aurora, CO
5K
62°
33°
6%

Dash for Detection: Oral Cancer Awareness 5K

Apr 11, 2026
Denver, CO
5K
62°
33°
6%

RMRR Spring Marathon Training Series #2

Apr 11, 2026
Thornton, CO
20M10M
65°
34°
7%

Rockin' on the River 5K

Apr 11, 2026
Littleton, CO
5K
61°
32°
9%

Aspen parkrun

Apr 11, 2026
Aspen, CO
5K
49°
26°
13%

Colorado Brewery Running Series

Apr 11, 2026
Denver, CO
5K
62°
33°
6%

South Boulder Creek parkrun

Apr 11, 2026
Boulder, CO
5K
63°
34°
11%

Mountain Ridge Trail Race

Apr 11, 2026
Highlands Ranch, CO
21M13.1M10K5K
60°
33°
5%

CRMAC Uplift Her - 5K Run/Walk

Apr 11, 2026
Fort Collins, CO
3.1M
63°
35°
7%

CRMAC Uplift Her - 5K

Apr 11, 2026
Fort Collins, CO
5K
63°
35°
7%

Run the Ranch

Apr 11, 2026
Loveland, CO
12HR12HR6HR4HR
63°
30°
8%

Run Through the Decades 6K/7K/8K/Half - Colorado Springs

Apr 11, 2026
Colorado Springs, CO
13.1M5M4.3M3.7M
61°
33°
5%
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