RunEmu

Half Marathon Races in Colorado (Page 2)

Browse 129+ upcoming half marathon races in Colorado.

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Silverton Alpine Marathon and 50K

Jul 18, 2026
Silverton, CO
31.1M26.2M8M
80°
53°
13%

Pikes Peak Ultra

Jul 25, 2026
Colorado Springs, CO
50M31.1M18.6M12.4M
86°
59°
13%

Box Canyon Trail Races

Jul 25, 2026
Telluride, CO
18.6M10M
79°
53°
14%

Aspen Valley Marathon

Jul 25, 2026
Aspen, CO
26.2M13.1M5K
76°
49°
9%

Run for Coffee Lovers 5K/10K/13.1 DENVER/AURORA

Jul 25, 2026
Centennial, CO
13.1M10K5K1M
87°
60°
8%

Spirit of the West 5K Run/Walk

Jul 26, 2026
Golden, CO
50M5K
87°
62°
7%

Winter Park 50K

Aug 1, 2026
Winter Park, CO
31.1M13M10K
67°
43°
11%

Aspen Backcountry

Aug 1, 2026
Aspen, CO
Marathon1/2 Marathon
75°
49°
9%

Rocky Mountain Half Marathon

Aug 1, 2026
Estes Park, CO
13.1M5K
79°
49°
8%

Bound for Boston Marathon & Half Marathon - Denver

Aug 2, 2026
Denver, CO
26.2M13.1M
90°
60°
5%

I'm Bound for Boston Marathon and Half Marathon - Denver

Aug 2, 2026
Denver, CO
26.2M13.1M
90°
60°
5%

All-Out Runapalooza

Aug 8, 2026
Arvada, CO
13.1M10K5K
87°
57°
5%

Run the Rockies Trail Race

Aug 8, 2026
Frisco, CO
13.1M10K
74°
39°
10%

Summer Sizzler- Denver

Aug 8, 2026
Denver, CO
50M6.2M3.1M1M
89°
59°
5%

Summer Sizzler- Colorado Springs

Aug 9, 2026
Colorado Springs, CO
50M9.3M6.2M3.1M1M
85°
58°
12%

Boulder Rez Marathon

Aug 15, 2026
Boulder, CO
26.2M26.2M19.7M13.1M10K
87°
56°
4%

Mt. Sneffels Half Marathon and 10K

Aug 15, 2026
Ouray, CO
13.1M10K
77°
52°
11%

The Cheyenne Mountain Run

Aug 15, 2026
Colorado Springs, CO
14M6.2M3.1M
84°
57°
11%

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

Aug 15, 2026
Centennial, CO
13.1M10K5K1M
86°
58°
6%

Bagel Run 5K/10K/13.1 DENVER/AURORA

Aug 15, 2026
Centennial, CO
13.1M10K5K1M
86°
58°
6%
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