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Races in Colorado - October 2026

Browse 62+ upcoming races in Colorado for October 2026.

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Races in Colorado - October 2026

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The Ruff Run

Oct 3, 2026
Loveland, CO
2.1M
70°
38°
5%

Colorado Springs Marathon

Oct 3, 2026
Colorado Springs, CO
26.2M13.1M5K
70°
42°
4%

Miles for Moms

Oct 3, 2026
Denver, CO
3M
71°
41°
5%

Sage Burner Trail Race

Oct 3, 2026
Gunnison, CO
31.1M17.4M9.3M
66°
28°
3%

Rut Run 5K

Oct 3, 2026
Estes Park, CO
5K
62°
33°
5%

Above the Clouds Ultra

Oct 3, 2026
Woodland Park, CO
31.1M10K
59°
31°
5%

International Taco Bell 50K

Oct 3, 2026
Denver, CO
31.1M
71°
41°
5%

Bear Chase Race - Half Marathon and 10K

Oct 3, 2026
Lakewood, CO
13.1M10K5K
70°
38°
6%

Nielson Two Mile Challenge

Oct 3, 2026
Colorado Springs, CO
2M
70°
42°
4%

HRCA Wildcat Mountain Trail Races

Oct 3, 2026
Littleton, CO
10M10K
70°
41°
8%

Rim to Rim Royal Gorge Races: 5K Road Run, Trail 8 Mile, Trail Half Marathon

Oct 3, 2026
Cañon City, CO
13.1M8M10K5K
73°
42°
3%

Spooky Sprint - Denver

Oct 3, 2026
Denver, CO
50M13.1M6.2M3.1M1M
71°
41°
5%

Sage Burner Trail Run

Oct 3, 2026
Gunnison, CO
31.1M17.4M8.1M5K
66°
28°
3%

Spooky Sprint

Oct 3, 2026
Denver, CO
13.1M10K5K1M
71°
41°
5%

I Can 5K

Oct 3, 2026
Thornton, CO
5K
72°
42°
5%

Rim to Rim Royal Gorge Races

Oct 3, 2026
Cañon City, CO
13.1M8M5K
73°
42°
3%

Emerald Mountain Trail Run

Oct 3, 2026
Steamboat Springs, CO
7.5M4M
67°
35°
9%

South Boulder Creek parkrun

Oct 3, 2026
Boulder, CO
5K
71°
42°
7%

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

Oct 3, 2026
Colorado Springs, CO
26.2M13.1M5K3.1M0.6M
70°
42°
4%

Rubey Rescue Run

Oct 4, 2026
Aspen, CO
3.1M
60°
34°
9%
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