Idaho Marathon Calendar 2025-2026

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Explore the best marathons in Idaho for 2025-2026! Our updated list features 10 exciting races across the region. Find your next race in Idaho below and join the running community at these great events!

October 2025
Oct
11
Saturday

City of Trees Marathon

5 km 10 km Half Marathon Marathon
Oct
11
Saturday

Hayden Lake Marathon

5 km 11 km Half Marathon Marathon
Oct
18
Saturday

Idaho Running Day

5 km 10 km 13 mi 26 mi
May 2026
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
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 26 mi
Jul
25
Saturday

Idaho Falls Marathon

5 km 13 mi 26 mi
August 2026
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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