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Marathons in Idaho

Idaho has 9 upcoming Marathons. The marathon is the benchmark endurance event — 26.2 miles of grit, pacing, and finish-line emotion that draws runners back year after year.

9 upcoming races listed

Fun racesScenic racesCompetitive racesQuirky racesFestive racesFor a Cause racesBeginner-friendly
Boise River Marathon

Run along the beautiful Boise River Greenbelt on a flat, fast course that celebrates fitness, community, and local businesses.

  • Fun
  • Scenic
  • Competitive
  • For a Cause
Sat, May 2, 2026, 6:30 AM MDT26.2 MilesEagle, ID
Push PotentialRUN

Course · Rolling · Family-oriented

YMCA Famous Idaho Potato Marathon & Fun Runs

Experience the flat, fast, and scenic Boise Greenbelt at this long-standing marathon event, perfect for setting a new personal best.

  • Fun
  • Scenic
  • Competitive
Sat, May 16, 2026, 7:00 AM MDT26.2 MilesBoise, ID
Push PotentialRUN

Course · Hilly · Timed race

CDA Marathon

Run a Boston-certified course through Coeur d'Alene, enjoying stunning lake views and the charm of this resort town. A beautiful, challenging experience awaits.

  • Scenic
  • Competitive
Sun, May 24, 2026, 6:30 AM PDT26.2 MilesCoeur d'Alene, ID
Push PotentialRUN

Course · Hilly · Timed race

Boise Marathon

Run one of the country's most scenic marathon courses this summer, winding through Boise's beautiful canyons, riversides, and parks.

  • Scenic
Sat, Jun 20, 2026, 6:04 AM MDT26.2 MilesBoise, ID
Serious TestRUN

Course · Hilly · Timed race

Race the Wolf

A challenging mountain trail race in Sandpoint, ID, offering marathon, half-marathon, 5-mile, and a unique Sky Climb.

Sun, Jun 21, 2026, 7:00 AM PDT26.2 MilesSandpoint, ID
Serious TestTRAIL

Course · Trail · Hilly

Mesa Falls Marathon

Run a scenic, point-to-point marathon through Idaho's Targhee National Forest, offering a challenging, high-altitude experience.

  • Scenic
  • Competitive
Sat, Jul 18, 2026, 5:00 AM MDT26.2 MilesAshton, ID
Push PotentialRUN

Course · Hilly · Timed race

Hayden Lake Marathon

Run a full marathon through North Idaho's breathtaking, picturesque landscapes, featuring Hayden Lake's clear waters and towering pine forests.

  • Scenic
Sat, Oct 10, 2026, 7:30 AM PDT26.2 MilesHayden Lake, ID
Push PotentialRUN

Course · Hilly · Timed race

City of Trees Marathon

Run the Boise Greenbelt Marathon, where scenic river views meet potential wildlife encounters and amazing sounds.

  • Scenic
  • Quirky
Sun, Oct 11, 2026, 8:00 AM MDT26.2 MilesBoise, ID
Push PotentialRUN

Course · Hilly · Timed race

Idaho Running Day

Discover the beauty of the Boise Greenbelt with a scenic run along the river, featuring distances for every runner and a lively post-race celebration.

  • Scenic
Sat, Oct 17, 2026, 8:00 AM MDT26.2 MilesBoise, ID
Push PotentialRUN

Course · Hilly · Timed race

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More Marathon races

All races in IdahoMarathons in Boise, IDMarathons in Idaho Falls, IDMarathons in Coeur d'Alene, IDMarathons in Eagle, IDMarathons in Sandpoint, IDMarathons in Mountain Home, IDMarathons in Twin Falls, ID

Other distances in Idaho

5Ks in Idaho10Ks in IdahoHalf Marathons in Idaho