Idaho Running Races

79 upcoming races across Idaho in the next 12 months, from local 5Ks to marathons and ultras. Updated nightly. Want filters, maps, and radius search? Open Idaho in the Race Finder.

By distance: Marathons · Half Marathons · 5K Races · 10K Races · Ultras

By city: Boise · Coeur d'Alene

Racing in Idaho: what the calendar looks like

There are 79 races on the Idaho calendar over the next 12 months, which works out to roughly 2 per week. Among complete calendar months, November 2026 has the most listed races (19); February 2027 has the fewest (1). The busiest places to race are Boise (22), Sandpoint (6), Coeur d'Alene (6).

Of those, 51 offer a 5K, 23 offer a 10K and 20 offer a Half Marathon. The next marathon is Idaho Running Day on October 17 in Boise. The next half marathon is Idaho Running Day on October 17.

By race count Idaho ranks 43rd of 51 states and DC.

Races by month

October 2026

November 2026

December 2026

January 2027

February 2027

March 2027

April 2027

May 2027

June 2027

July 2027

August 2027

September 2027

Planning a race

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