Half Marathons in Idaho
From first-timer-friendly flats to trails worth traveling for, find a Idaho half marathon that fits your goals and your sense of adventure.
23
upcoming races
23 races
Moscow Mountain Madness · Moscow, Idaho
2026 LOG Virtual 5K/10K/Half & Full Marathon · Boise, Idaho
Hayden Lake Marathon · Hayden Lake, Idaho
Rush Creek Stampede · Cambridge, Idaho
City of Trees Marathon · Boise, Idaho
Idaho Running Day · Boise, Idaho
Haunted Half Marathon and 5k by Run the Undergrad · Rexburg, Idaho
YMCA Halloween Run presented by Micron · Boise, Idaho
Eternal Surrender 5K, 10K and Half Marathon · Coeur D Alene, Idaho
Halloween Hustle · Coeur d'Alene, Idaho
Boise Half Marathon · Boise, Idaho
Race to Robie Creek® · Boise, Idaho
2027 Spring Dash · Coeur d'Alene, Idaho
2027 Falls2Falls 2026 · Twin Falls, Idaho
Boise River Marathon · Boise, Idaho
YMCA Famous Idaho Potato Marathon & Fun Runs · Boise, Idaho
Famous Idaho Potato Marathon · Boise, Idaho
2027 Redfish Lake Lodge Memorial Run · Stanley/red Fish Lake, Idaho
Redfish Lake Lodge Memorial Weekend Run · Stanley, Idaho
2027 Coeur d'Alene Marathon · Coeur d'Alene, Idaho
2027 Idaho Falls Marathon · Idaho Falls, Idaho
2027 25th Annual Pocatello Marathon · Pocatello, Idaho
Malad Valley Marathon 2027 · Malad City, Idaho