Idaho

Idaho's race calendar centers on Boise and runs mostly from April through October. The YMCA Famous Idaho Potato Marathon leans into the state's best-known export each May, and the Boise River Marathon and Boise Half Marathon add straightforward road options. North Idaho has its own scene around Coeur d'Alene and Sandpoint, including the Coeur d'Alene Marathon along the lakeshore, while Sun Valley and McCall carry the mountain-town ultras and trail races, like the Standhope Ultra Challenge and the Sasquatch Shuffle.

Browse the calendar below, filter by distance or month, or jump to a city.