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Half Marathon Races in Idaho

19 upcoming Half Marathon races across Idaho. Run This events are listed first — pick a city below to narrow it down.

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Cities in IdahoBoiseCoeur D Alene

19 races

Sat, Aug 22, 2026

Popsicle 5K/10K/Half - Boise

Boise, ID

Outside5K10KMarathon

Fri, Sep 11, 2026

Malad Valley Marathon

Malad City, ID

OutsideMarathon10K5K1 mile

Fri, Sep 18, 2026

Priest Lake Marathon

Priest Lake, ID

Outside31.1 miMarathon10K

Fri, Sep 25, 2026

St. Luke's FitOne 5K/10K/Half Marathon

Boise, ID

Outside5K10KMarathon

Fri, Oct 9, 2026

Hayden Lake Marathon

Hayden Lake, ID

OutsideMarathon6.5 mi5K805 m

Fri, Oct 9, 2026

Rush Creek Stampede

Cambridge, ID

OutsideMarathon5K10K

Sat, Oct 10, 2026

City of Trees Marathon

Boise, ID

OutsideMarathon10K5K

Fri, Oct 16, 2026

Idaho Running Day

Boise, ID

OutsideMarathon10K5K

Fri, Oct 23, 2026

Haunted Half Marathon and 5k by Run the Undergrad

Rexburg, ID

Outside5KMarathon

Fri, Oct 23, 2026

Eternal Surrender Half Marathon

Coeur D Alene, ID

OutsideMarathon5K10K

Fri, Oct 23, 2026

YMCA Halloween Run presented by Micron

Boise, ID

OutsideMarathon5K1 mile

Sat, Oct 24, 2026

Halloween Hustle

Coeur d'Alene, ID

OutsideMarathon10K5K805 m

Fri, Nov 13, 2026

Boise Half Marathon

Boise, ID

OutsideMarathon

Fri, Apr 16, 2027

Race to Robie Creek®

Boise, ID

OutsideMarathon

Fri, Apr 23, 2027

Spring Dash

Coeur d'Alene, ID

OutsideMarathon10K5K

Sat, May 1, 2027

Boise River Marathon

Boise, ID

OutsideMarathon10K5K

Fri, May 14, 2027

YMCA Famous Idaho Potato Marathon & Fun Runs

Boise, ID

OutsideMarathon10K5K

Thu, May 27, 2027

Sandpoint Marathon

Sandpoint, ID

Outside5K10KMarathon

Fri, May 28, 2027

CDA Marathon

Coeur d'Alene, ID

OutsideMarathon10K5K1 mile

Half Marathon races by city in Idaho

Boise9Coeur D Alene4