Idaho Half Marathons

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Trail Half Marathons 21k (T)

Idaho Half Marathons January 2020

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 2020 at this time

Idaho Half Marathons February 2020

No February Half Marathons in Idaho in 2020 at this time

Idaho Half Marathons March 2020

Sat Mar 9, 2019

Sat Mar 16, 2019

Boise, ID

Caldwell, ID

Idaho Half Marathons April 2020

Sat Apr 18, 2020

Boise, ID

Idaho Half Marathons May 2020

Sat May 4, 2019

Sat May 11, 2019

Sat May 11, 2019


Sat May 30, 2020

Sat May 11, 2019


Sat May 25, 2019


Sun May 26, 2019


Sun May 24, 2020 (W)

Boise, ID

Priest Lake, ID

Eagle, ID


Boise, ID

Shoshone Falls, ID


Stanley, ID


Priest Lake, ID


Coeur d'Alene, ID

Idaho Half Marathons June 2020

Sat Jun 1, 2019

Thu Jun 11, 2020 (W)

Sat Jun 15, 2019


Sat Jun 22, 2019

Rexburg, ID

Garden City, ID

Idaho Falls, ID


Soda Springs, ID

Idaho Half Marathons July 2020

Sat July 6, 2019


Sat July 20, 2019

Sat Jul 20, 2019

Sat July 25, 2020 (W)

Island Park, ID


Boise, ID

Blackfoot, ID


Idaho Falls, ID

Idaho Half Marathons August 2019

Wed Aug 12, 2020

Thu Aug 13, 2020


Sat Aug 24, 2019

Sat Aug 31, 2019

Lewiston, ID

Lewiston, ID

Ashton, ID

Pocatello, ID

Idaho Half Marathons September 2019

Sat Sep 14, 2019 (W)


Sat Sep 8, 2018


Sun Sep 8, 2019 (T)

Sat Sep 15, 2018

Sat Sep 21, 2019


Sun Sep 15, 2019  (W)

Riggins, ID


Salmon, ID


Moscow, ID

Driggs, ID

Ketchum, ID


Sandpoint, ID

Idaho Half Marathons October 2019

Sat Oct 5, 2019

Sat Oct 19, 2019

Sun Oct 13, 2019

Sat Oct 19, 2019

 Sat Oct 26, 2019


Sun Oct 27, 2019 

Cambridge, ID

Hayden, ID

Boise, ID

Lewiston, ID

Athol, ID

Boise, ID

Idaho Half Marathons November 2019

Sat Nov 2, 2019

Garden City, ID

Idaho Half Marathons December 2019

No December 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 2018

Idaho Half Marathons

The Idaho Half Marathon Calendar is a complete simplistic listing of Idaho half marathons. Currently the Idaho half marathon schedule has 2019 Idaho half marathons and 2020 Idaho half marathons as they roll in.  Idaho half marathons 2019 & Idaho half marathons 2020 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 2019

Idaho half marathons 2020

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