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
| Sat Mar 13 | St. Patrick's Fun Run Half Marathon 5.5-Mile & 3.5-Mile | Tuttle ID |
May 2021
| Sat May 29 | Redfish Lake Lodge Run Half Marathon | Stanley ID |
| Sun May 30 | Coeur d'Alene Marathon Half Marathon 10K & 5K | Coeur d'Alene ID |
June 2021
| 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 |
July 2021
| Sat Jul 31 | Idaho Falls Marathon Half Marathon & 5K | Idaho Falls ID |
August 2021
| Sat Aug 28 | Mesa Falls Marathon Half Marathon 10K & 5K | Ashton ID |
September 2021
| Sat Sep 4 | Pocatello Marathon Half Marathon 10K & 5K | Pocatello ID |
| Wed Sep 8 & Thu Sep 9 | Northwest Series Marathon Half Marathon 10K & 5K – Day 5 & 6 | Lewiston ID |
| Sat Sep 18 | Famous Idaho Potato Marathon Half Marathon 10K & 5K | Boise ID |
| Sun Sep 19 | Scenic Half Marathon & 10K | Sandpoint ID |
| Sat Sep 25 | Priest Lake Marathon Half Marathon Quarter Marathon 50K 25K & 5K | Priest Lake ID |
October 2021
| Sat Oct 16 | Hayden Lake Marathon Half Marathon & Quarter Marathon | Hayden ID |
| Sat Oct 16 | Jack and Jill's Downhill Marathon & Half Marathon | Boise ID |
| Sun Oct 24 | Boise Marathon Half Marathon 10K & 5K | Boise ID |
November 2021
| Sat Nov 6 | Zeitgeist Half Marathon | Boise ID |
