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Ultra Races in Colorado (Page 5)

Browse 99+ upcoming ultra races in Colorado.

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International Taco Bell 50K

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

Sage Burner Trail Race

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

Spooky Sprint - Denver

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

The Bear Chase

Oct 4, 2026
Lakewood, CO
62.1M50M31.1M1/2 Marathon
70°
38°
6%

Blue Sky Trail Marathon & Half Marathon

Oct 17, 2026
Fort Collins, CO
26.7M13.8M
63°
35°
5%

Bobcat Trail Race

Oct 17, 2026
Colorado Springs, CO
31.1M15.5M10K5K
64°
36°
3%

Bobcat Trail Races

Oct 17, 2026
Colorado Springs, CO
31.1M15.5M10K5K
64°
36°
3%

Indian Creek Trail Runs

Oct 17, 2026
Sedalia, CO
54M35M15M5.5M
63°
34°
5%

Bridge Burner Ultra

Oct 24, 2026
Cañon City, CO
35M31.1M21.7M10K
66°
34°
4%

Colorado 24 Hour Run

Oct 31, 2026
Fort Collins, CO
24HR24HR12HR12HR6HR6HR
60°
31°
5%

Turkey Trails- Denver

Nov 7, 2026
Denver, CO
50M13.1M6.2M3.1M1M
60°
30°
4%

Colorado 24 Hour Run

Nov 7, 2026
Fort Collins, CO
24HR24HR12HR12HR6HR6HR
58°
30°
4%

Kessel Run Ultra

Nov 7, 2026
Fruita, CO
50M37.3M20M10M
58°
31°
2%

Turkey Trails - Colorado Springs

Nov 8, 2026
Colorado Springs, CO
50M13.1M6.2M3.1M1M
58°
29°
1%

Colorado Cold Rush

Nov 21, 2026
Colorado Springs, CO
31.1M13.1M10K
53°
25°
1%

Sawmill Trail Runs

Dec 5, 2026
Pine, CO
31.68M16.14M88M
39°
10°
2%

Candy Cane Course - Colorado Springs

Dec 5, 2026
Colorado Springs, CO
50M9.3M6.2M3.1M1M
46°
20°
1%

Candy Cane Course - Denver

Dec 6, 2026
Westminster, CO
50M9.3M6.2M3.1M1M
49°
20°
2%

WinterFest 5k & Fun Run

Dec 12, 2026
Thornton, CO
1200M3.1M
46°
19°
2%
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