Idaho Half Marathons

  • Facebook page
  • Twitter
  • Instagram Social Icon
  • Pinterest App Icon
  • YouTube Classic

Trail Half Marathons 21k (T)

Idaho Half Marathons January 2021

Official Walker Friendly Half Marathons in Idaho

18:32 mile / 4 Hour Minimum course time limit= (W)

Symbol only applies to half marathon events

Does NOT meet the Walker Friendly 4 hour minimum (18:32 / mi) = Not Walker Friendly (NWF) 


No January Half Marathons in Idaho in 2021 at this time

Idaho Half Marathons February 2021

No February Half Marathons in Idaho in 2021 at this time

Idaho Half Marathons March 2021

Sat Mar 6, 2021

Sat Mar 14, 2020

Pullman, ID

Caldwell, ID

Idaho Half Marathons April 2021

Sat Apr 18, 2020

Boise, ID

Idaho Half Marathons May 2021

Sat May 9, 2020

Sat May 9, 2020


Sat May 23, 2020


Sun May 24, 2020


Sun May 24, 2020 (W)

Sat May 30, 2020

Priest Lake, ID

Shoshone Falls, ID


Stanley, ID


Priest Lake, ID


Coeur d'Alene, ID

Boise, ID

Idaho Half Marathons June 2021

Sat Jun 6, 2020

Thu Jun 10, 2021 (W)

Sat Jun 18, 2020


Sat Jun 27, 2020

Rexburg, ID

Garden City, ID

Idaho Falls, ID


Soda Springs, ID

Idaho Half Marathons July 2021

Sat July 6, 2019


Sat July 18, 2020

Sat Jul 20, 2019

Sat July 31, 2021 (W)

Island Park, ID


Boise, ID

Blackfoot, ID


Idaho Falls, ID

Idaho Half Marathons August 2021

Sat Aug 22, 2020

Sun Aug 23, 2020

Ashton, ID

Cour d'Alene, ID

Idaho Half Marathons September 2021

Sat Sep 4, 2021

Sat Sep 12, 2020 (W)

Sun Sep 8, 2019 (T)

Sat Sep 11, 2021

Wed Sep 15, 2021

Thu Sep 16, 2021

Sat Sep 21, 2019

Sat Sep 19, 2020

Sat Sep 19, 2020


Sun Sep 19, 2021  (W)

Sat Sep 26, 2020

Sat Sep 26, 2020

Pocatello, ID

Riggins, ID


Moscow, ID

Boise, ID

Lewiston, ID

Lewiston, ID

Driggs, ID

Ketchum, ID

Boise, ID


Sandpoint, ID

Priest Lake, ID

Rexburg, ID

Idaho Half Marathons October 2021

Sat Oct 3, 2020

Sat Oct 5, 2019

Sat Oct 17, 2020

Sun Oct 11, 2020

Sat Oct 17, 2020

 Sat Oct 26, 2019


Sun Oct 25, 2020 

Stanley, ID

Cambridge, ID

Hayden, ID

Boise, ID

Lewiston, ID

Athol, ID

Boise, ID

Idaho Half Marathons November 2021

Sat TBD, 2021

Garden City, ID

Idaho Half Marathons December 2021

No December 2021 Half Marathons in Idaho at this time

Idaho Half Marathon Calendar event dates in dark grey are delinquent dates not updated by the race organizer yet. We strive to have dates 1 year out for Idaho half marathons, but have no control of when they set, announce or update their dates.

Idaho Half Marathons 2020

Idaho Half Marathons

The Idaho Half Marathon Calendar is a complete simplistic listing of Idaho half marathons. Currently the Idaho half marathon schedule has 2020 Idaho half marathons and 2021 Idaho half marathons as they roll in.  Idaho half marathons 2020 & Idaho half marathons 2021 also identify trail half marathons and walker friendly half marathons by a (T) symbol and a (W) symbol.  The (T) means it is a TRUE trail half marathon 21k (off road, switchbacks, etc) and a (W) means it is truly "official walker friendly" requiring the half marathon to allow a minimum of 18:32 mile pace, minimum 4 hours for participants to finish the 13.1 mile distance.


The Idaho half marathon calendar features a complete listing of Boise half marathons, Idaho Falls half marathons, Nampa half marathons, Meridian half marathons, Pocatello half marathons, Caldwell half marathons, Coeur d'Alene half marathons, Twin Falls half marathons, Lewiston half marathons, and many more 1/2 marathons in ID.

Idaho half marathons 2020

Idaho half marathons 2021

  • Facebook
  • Instagram
  • Twitter
  • Pinterest
  • YouTube


© 2008 - 2020 Half Marathon Calendar USA a Fifty States Half Marathon Club LLC Company  -  100% Veteran Owned   -   Privacy Policy     Advertise