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Idaho Half Marathon Calendar 2025-2026

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Explore the best half marathons in Idaho for 2025-2026! Our updated list features 16 exciting races across the region. Find your next race in Idaho below and join the running community at these great events!

October 2025
Oct
26
Sunday

Halloween Hustle Half Marathon - Coeur d'Alene, ID

5 km 10 km Half Marathon
November 2025
Nov
15
Saturday

Boise Half Marathon

Half Marathon
April 2026
Apr
18
Saturday

Race to Robie Creek

Half Marathon
Apr
25
Saturday

Spring Dash

5 km 10 km Half Marathon
May 2026
May
2
Saturday

Boise River Marathon

5 km 10 km Half Marathon Marathon
May
9
Saturday

Long Bridge Half-Marathon

5 km 10 km Half Marathon
May
16
Saturday

YMCA Famous Idaho Potato Marathon

5 km 10 km Half Marathon Marathon
May
24
Sunday

CDA Marathon

3 mi 6 mi 13 mi 26 mi
June 2026
Jun
6
Saturday

Teton Dam Marathon

5 km 10 km 13 mi 26 mi
Jun
6
Saturday

Spirit of Magic Valley Half Marathon

5 km 10 km 13 mi
Jun
20-21
Sa - Su

Race The Wolf

Trail Run 5 mi Half Marathon Marathon
July 2026
Jul
18
Saturday

Mesa Falls Marathon

5 km 10 km 13 mi Marathon
Jul
25
Saturday

Idaho Falls Marathon

5 km 13 mi 26 mi
August 2026
Aug
8-9
Sa - Su

Boise Spartan Trifecta Weekend

Obstacle Run 5 km 10 km Half Marathon
Aug
29
Saturday

Pocatello Marathon

3 mi 6 mi 13 mi 26 mi
September 2026
Sep
5
Saturday

Salmon Marathon

Half Marathon Marathon
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