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.
37
upcoming races
37 races
Bear Lake Trifecta - Idaho · Saint Charles, Idaho
Teton Dam Marathon · Rexburg, Idaho
Spirit of Magic Valley Half Marathon - 10K - 5K - Kids 1 Mile · Twin Falls, Idaho
Scenic River Classic · Idaho Falls, Idaho
Race the Wolf · Sandpoint, Idaho
Christmas 5K/10K/Half Marathon in July - Boise · Boise, Idaho
Christmas 5K/10K/Half Marathon in July - Idaho Falls · Idaho Falls, Idaho
Mesa Falls Marathon · Ashton, Idaho
Running for Children's Rights to Both Parents - 7 of 50 Half Marathons in 50 States - Idaho · Ashton, Idaho
Idaho Falls Marathon · Idaho Falls, Idaho
Outlaw Trail Ultra Half Marathon · Hansen, Idaho
Salmon Marathon & Half Marathon · Salmon, Idaho
Pocatello Marathon · Pocatello, Idaho
Malad Valley Marathon · Malad City, Idaho
Priest Lake Marathon · Priest Lake, Idaho
2026 Northwest Series - Day 5 (ID) · Lewiston, Idaho
2026 Northwest Series - Day 6 (ID) · Lewiston, Idaho
St. Luke's FitOne 5K/10K/Half Marathon · Boise, Idaho
FitOne Half Marathon · Boise, Idaho
Legends Never Die · Ketchum, Idaho
Moscow Mountain Madness · Moscow, 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
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
2027 Coeur d'Alene Marathon · Coeur d'Alene, Idaho