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Half Marathon Races in Idaho
Browse 48+ upcoming half marathon races in Idaho.
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36th Annual St. Patrick's Fun Run & Walk
Mar 14, 2026
Bliss, ID
13.1M
5.5M
3.5M
56°
30°
4%
St. Patrick's Fun Run
Mar 14, 2026
Hagerman, ID
13.1M
5.5M
3.5M
56°
30°
4%
Undergrad Spring 2026
Mar 21, 2026
Rexburg, ID
26.2M
13.2M
3.1M
48°
28°
4%
Spitfire Ultra Trail Challenge
Apr 18, 2026
Menan, ID
31.1M
15.5M
7.5M
5K
57°
33°
5%
Race to Robie Creek
Apr 18, 2026
Boise, ID
13.1M
63°
40°
6%
Falls2Falls 2026
Apr 25, 2026
Twin Falls, ID
13.1M
5.2M
3.1M
1M
62°
36°
5%
Spring Dash
Apr 25, 2026
Coeur d'Alene, ID
13.1M
10K
5K
63°
38°
5%
Falls2Falls Run
Apr 25, 2026
Twin Falls, ID
13.1M
5.2M
5K
62°
36°
5%
Boise River Marathon
May 2, 2026
Eagle, ID
26.2M
13.1M
6.2M
3.1M
64°
39°
7%
Long Bridge Half-Marathon
May 9, 2026
Sandpoint, ID
13.1M
6.2M
5K
67°
37°
10%
Over the Top Trail Race
May 9, 2026
Pocatello, ID
15.5M
10M
5M
3M
69°
42°
5%
YMCA Famous Idaho Potato Marathon & Fun Runs Presented by The Idaho Potato Commission
May 16, 2026
Boise, ID
26.2M
13.1M
10K
5K
73°
48°
7%
YMCA Famous Idaho Potato Marathon & Fun Runs
May 16, 2026
Boise, ID
26.2M
13.1M
10K
5K
73°
48°
7%
Famous Idaho Potato Marathon
May 16, 2026
Boise, ID
26.2M
13.1M
10K
5K
1M
73°
48°
7%
Sharon's Ride.Run.Walk. 2026
May 17, 2026
Boise, ID
15M
5K
3M
1M
73°
48°
7%
Redfish Lake Lodge Memorial Weekend Run
May 23, 2026
Stanley, ID
13.1M
6.2M
3.1M
1M
62°
32°
8%
Coeur d'Alene Marathon
May 24, 2026
Coeur d'Alene, ID
26.2M
13.1M
10K
5K
73°
47°
8%
Bear Lake Trifecta - Idaho
Jun 5, 2026
Saint Charles, ID
26.2M
13.1M
68°
42°
6%
Spirit of the Magic Valley Half Marathon
Jun 6, 2026
Twin Falls, ID
13.1M
10K
5K
75°
47°
5%
Spirit of Magic Valley Half Marathon - 10K - 5K - Kids 1 Mile
Jun 6, 2026
Twin Falls, ID
13.1M
10K
5K
75°
47°
5%
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