Skip to main content
Run Vibes

Half Marathons in Idaho

Idaho has 11 upcoming Half Marathons. Half marathons are the fastest-growing race distance, offering a true endurance challenge with a more accessible training window than the full marathon.

11 upcoming races listed

Fun racesScenic racesCompetitive racesQuirky racesFestive racesFor a Cause racesBeginner-friendly
Race to Robie Creek®

A highly popular half marathon in Boise, celebrating the 100th anniversary of Route 66 with a challenging, mountainous course.

  • Fun
  • Competitive
  • Quirky
  • Festive
Sat, Apr 18, 2026, 12:00 PM MDT13.1 MilesBoise, ID
Push PotentialRUN

Course · Hilly · Timed race

Falls2Falls 2026

Run or walk through Twin Falls, past stunning waterfalls, and contribute to local trail improvements in the Magic Valley community.

  • Scenic
  • For a Cause
Sat, Apr 25, 2026, 8:00 AM MDT13.1 MilesTwin Falls, ID
Steady EffortRUN

Course · Road · Rolling · Walkers welcome

Spring Dash

Embrace spring's arrival with a scenic half marathon along Coeur d’Alene's lakefront, offering fresh air and energizing views.

  • Scenic
  • Festive
Sat, Apr 25, 2026, 8:00 AM PDT13.1 MilesCoeur d'Alene, ID
Steady EffortRUN

Course · Hilly · Timed race

Long Bridge Half-Marathon

Experience a fast, flat, and scenic run over a pristine mountain lake in Sandpoint, ID. Perfect for a personal best or a beautiful day out.

  • Scenic
  • Competitive
Sat, May 9, 2026, 8:00 AM PDT13.1 MilesSandpoint, ID
Push PotentialRUN

Course · Hilly · Timed race

Running for Children's Rights to Both Parents - 6 of 50 Half Marathons in 50 States -

A virtual half marathon supporting children's rights to both parents and raising awareness for parental alienation, part of a 50-state mission.

  • Inaugural
  • For a Cause
Sat, May 23, 2026, 9:00 AM EDT13.1 MilesAshton, ID
Steady EffortRUN

Course · Rolling · Timed race

Redfish Lake Lodge Memorial Weekend Run

Kick off summer with a truly scenic half marathon in Idaho's stunning mountainous high-altitude landscape, starting and ending at Redfish Lake Lodge.

  • Scenic
Sat, May 23, 2026, 10:00 AM MDT13.1 MilesStanley, ID
Push PotentialRUN

Course · Hilly · Timed race

Spirit of Magic Valley Half Marathon - 10K - 5K - Kids 1 Mile

Run along the stunning Snake River Canyon Rim Trail, taking in breathtaking views of Shoshone Falls and the Perrine Bridge in Twin Falls, ID.

  • Scenic
Sat, Jun 6, 2026, 8:00 AM MDT13.1 MilesTwin Falls, ID
Push PotentialRUN

Course · Hilly · Family-oriented

Christmas 5K/10K/Half Marathon in July - Boise

Celebrate Christmas in July with a festive run in Boise, complete with holiday cheer and a spirited atmosphere for all levels.

  • Fun
  • Competitive
  • Quirky
  • Festive
Sat, Jul 11, 2026, 7:00 AM MDT13.1 MilesBoise, ID
Push PotentialRUN

Course · Hilly · Walkers welcome

Halloween Hustle

Embrace the spooky spirit on a scenic lakeside half marathon, complete with creative costumes and festive fun.

  • Fun
  • Scenic
  • Quirky
  • Festive
Sun, Oct 25, 2026, 8:00 AM PDT13.1 MilesCoeur d'Alene, ID
Push PotentialRUN

Course · Hilly · Timed race

ZD30 The Summit (1 Mile, 5K, and 10K, 1/2 Marathon, 30 Mile Ultra)

A deeply meaningful run/walk event honoring veterans, celebrating commitment, and supporting a vital cause with every step.

  • For a Cause
Sat, Nov 7, 2026, 10:00 AM MST13.1 MilesBoise, ID
Steady EffortRUN

Course · Walkers welcome

Boise Half Marathon

Run the Boise Greenbelt, where scenic views meet unpredictable river conditions and potential wildlife encounters for a unique half marathon.

  • Scenic
  • Quirky
Sat, Nov 14, 2026, 9:00 AM MST13.1 MilesBoise, ID
Push PotentialRUN

Course · Hilly · Timed race

Weekly picks

Get weekly race picks for Idaho

New races, upcoming events, and hidden gems in Idaho — straight to your inbox.

No spam. Unsubscribe anytime. See our Privacy Policy.

More Half Marathon races

All races in IdahoHalf Marathons in Boise, IDHalf Marathons in Idaho Falls, IDHalf Marathons in Coeur d'Alene, IDHalf Marathons in Eagle, IDHalf Marathons in Sandpoint, IDHalf Marathons in Mountain Home, IDHalf Marathons in Twin Falls, ID

Other distances in Idaho

5Ks in Idaho10Ks in IdahoMarathons in Idaho