ID · October 2026
Half Marathons in Idaho in October
5 half marathons in Idaho are on the calendar for October 2026, in Boise, Coeur D Alene, Rexburg, Coeur d'Alene. Tap a race for the course, weather, past results and how to register.
Idaho Running Day · Boise, Idaho
Eternal Surrender 5K, 10K and Half Marathon · Coeur D Alene, Idaho
Haunted Half Marathon and 5k by Run the Undergrad · Rexburg, Idaho
YMCA Halloween Run presented by Micron · Boise, Idaho
Halloween Hustle · Coeur d'Alene, Idaho