Idaho Half Marathons by Date • By City
Browse all 2021 Idaho half marathons by month below. For each race, you’ll find course maps, elevation profiles, runner reviews, and how to sign up.
When you view a race, you’ll also find contact info if you’re having problems with your registration or need to contact the race directors.
|Sat Mar 13||St. Patrick's Fun Run Half Marathon 5.5-Mile & 3.5-Mile||Tuttle ID|
|Sun May 30||Coeur d'Alene Marathon Half Marathon 10K & 5K||Coeur d'Alene ID|
|Sat Jun 5||Teton Dam Marathon Half Marathon 10K & 5K||Rexburg ID|
|Thu Jun 10||Bear Lake Trifecta Marathon & Half Marathon – Idaho||Montpelier ID|
|Sat Jun 12||Mountain to Meadow Half Marathon & 10K||Lolo Pass ID|
|Sat Jul 31||Idaho Falls Marathon Half Marathon & 5K||Idaho Falls ID|
|Sat Aug 28||Mesa Falls Marathon Half Marathon 10K & 5K||Ashton ID|
|Sat Sep 26||Teton Dam Marathon Half Marathon 10K & 5K||Rexburg ID|
|Sat Oct 3||Redfish Lake Lodge Memorial Run Half Marathon 10K & 5K||Stanley ID|
|Sun Oct 11||City of Trees Marathon & Half Marathon||Boise ID|
|Sat Oct 17||Hayden Lake Marathon Half Marathon & Quarter Marathon||Hayden ID|
|Sun Oct 25||Boise Marathon Half Marathon 10K & 5K||Boise ID|
|Sat Nov 2||Zeitgeist Half Marathon||Boise ID|