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Half Marathon Races in Colorado (Page 6)

Browse 129+ upcoming half marathon races in Colorado.

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Westy Half & 5k

Oct 11, 2026
Westminster, CO
13.1M5K
68°
38°
5%

Bobcat Trail Races

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

Bobcat Trail Race

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%

Blue Sky Trail Marathon

Oct 18, 2026
Fort Collins, CO
13.1M
63°
35°
5%

Bridge Burner Ultra

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

Spooky Sprint

Oct 31, 2026
Colorado Springs, CO
13.1M10K5K1M
60°
31°
2%

PB&J Fuel Run 5K/10K/13.1 DENVER/AURORA

Oct 31, 2026
Centennial, CO
13.1M10K5K1M
60°
32°
3%

All-Out Kooky-Spooky

Nov 1, 2026
Golden, CO
13.1M10K5K
59°
35°
6%

Rim Rock Marathon and Half Marathon

Nov 1, 2026
Fruita, CO
26.2M13.1M
60°
33°
2%

Kessel Run Ultra

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

HRCA Backcountry Wilderness Half Marathon

Nov 7, 2026
Highlands Ranch, CO
13.1M
58°
30°
2%

HRCA Backcountry Wilderness Half Marathon

Nov 7, 2026
Lone Tree, CO
13.1M
58°
30°
2%

Turkey Trails- Denver

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

Turkey Trails - Colorado Springs

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

Southwest Series - Day 2 - CO

Nov 9, 2026
Durango, CO
26.2M13.1M5K
55°
23°
4%

Louisville Trail Race

Nov 14, 2026
Louisville, CO
13.1M10K5K
58°
30°
5%

TURKEY TREK (13.1, 10k, 5k & 2k)

Nov 21, 2026
Arvada, CO
13.1M10K5K1.2M
54°
23°
2%

Colorado Cold Rush

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

Turkey Trek

Nov 21, 2026
Arvada, CO
13.1M10K5K1.2M
54°
23°
2%
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