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Idaho Marathon Calendar 2026-2027

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Monthly updates for Idaho

Get new running races (and updates) in your inbox every month.

Explore the best marathons in Idaho for 2026-2027! Our updated list features 14 exciting races across the region. Find your next race in Idaho below and join the running community at these great events!

May 2026
May
2
Sa

Boise River Marathon

5 km 10 km 13 mi 26 mi
May
16
Sa

YMCA Famous Idaho Potato Marathon

5 km 10 km Half Marathon Marathon
May
24
Su

CDA Marathon

5 km 10 km Half Marathon Marathon
June 2026
Jun
6
Sa

Teton Dam Marathon

5 km 10 km Half Marathon Marathon
Jun
20-21
Sa - Su

Race The Wolf

Trail Run 5 mi Half Marathon Marathon
Jun
20
Sa

Boise Marathon

5 km 10 km Half Marathon Marathon
July 2026
Jul
18
Sa

Mesa Falls Marathon

5 km 10 km Half Marathon Marathon
Jul
25
Sa

Idaho Falls Marathon

5 km 13 mi 26 mi
September 2026
Sep
5
Sa

Pocatello Marathon

3 mi 6 mi 13 mi 26 mi
Sep
5
Sa

Salmon Marathon

Half Marathon Marathon
Sep
19
Sa

Priest Lake Marathon

10 km Half Marathon Marathon 50 km
October 2026
Oct
10
Sa

Hayden Lake Marathon

5 km 11 km Half Marathon Marathon
Oct
10
Sa

City of Trees Marathon

5 km 10 km Half Marathon Marathon
Oct
17
Sa

Idaho Running Day

5 km 10 km 13 mi 26 mi