Idaho Race Calendar

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.

March 2021

May 2021

June 2021

July 2021

Sat Jul 31 Idaho Falls Marathon Half Marathon & 5K Idaho Falls ID

August 2021

September 2021

October 2021

November 2021

Sat Nov 6 Zeitgeist Half Marathon Boise ID