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Marathon Races in Idaho
Browse 38+ upcoming marathon races in Idaho.
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Pulse Endurance Runs
Mar 21, 2026
Eagle, ID
12HR
6HR
52°
33°
11%
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%
Heavens Gate Marathon and Half Marathon
May 1, 2026
Riggins, ID
32.9M
16.1M
57°
32°
9%
Boise River Marathon
May 2, 2026
Eagle, ID
26.2M
13.1M
6.2M
3.1M
64°
39°
7%
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%
Famous Idaho Potato Marathon
May 16, 2026
Boise, ID
26.2M
13.1M
10K
5K
1M
73°
48°
7%
YMCA Famous Idaho Potato Marathon & Fun Runs
May 16, 2026
Boise, ID
26.2M
13.1M
10K
5K
73°
48°
7%
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%
Scout Mountain Ultras
Jun 5, 2026
Pocatello, ID
100M
50M
31.1M
23M
77°
49°
6%
Sharlie Shuffle
Jun 6, 2026
McCall, ID
12HR
6HR
66°
40°
11%
Teton Dam Marathon
Jun 6, 2026
Rexburg, ID
26.2M
13.1M
10K
5K
72°
45°
9%
Dirty Dog Trail Marathon and Half Marathon
Jun 13, 2026
Boise, ID
Marathon
1/2 Marathon
81°
54°
4%
River of No Return Endurance Runs
Jun 20, 2026
Challis, ID
67.1M
34.2M
19.9M
79°
47°
4%
CHAFE 150 Gran Fondo
Jun 20, 2026
Sandpoint, ID
150M
80M
75M
55M
40M
25M
4M
75°
45°
10%
Boise Marathon
Jun 20, 2026
Boise, ID
26.2M
13.1M
10K
5K
84°
56°
3%
Race the Wolf
Jun 21, 2026
Sandpoint, ID
26.2M
13.1M
75°
45°
10%
To Bone and Back Relay
Jun 27, 2026
Idaho Falls, ID
40M
5M
83°
47°
2%
Mesa Falls Marathon
Jul 18, 2026
Ashton, ID
26.2M
13.1M
88°
53°
1%
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