There are 113 running races in Idaho in 2026 across 50 cities. The next upcoming race is the Interfaith 5k in Boise on April 25. Popular distances include 5K races, half marathons, trail runs.

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Hayden Sprint Triathlon

Sat, Jul 11 · Hayden, ID Hayden
Triathlon Hayden Sprint Triathlon **ATHENA**Hayden Sprint TriathlonHayden Sprint Triathlon **CLYDESDALE** +2

Boise Front Trail Festival

Fri, Jul 31 · Boise, ID Boise
Trail Boise Front Trail Festival: Hill ClimbBoise Front Trail Festival: 5 Mile CourseBoise Front Trail Festival: 10 Mile Course

Wild River Dash

Sat, Aug 22 · Boise, ID Boise
Triathlon Kid Individual DuathlonKid Relay Team DuathlonTeen Relay Team Duathlon +3

Priest Lake Triathlon

Sun, Aug 30 · Priest Lake, ID Priest Lake
Triathlon Priest Lake OFF-ROAD TEAM Relay TriathlonPriest Lake Sprint ROAD BIKE TriathlonPriest Lake OFF-ROAD Sprint Triathlon +1

Jen McKenna Paddle and Run 6.0

Sat, Sep 12 · Coeur D Alene, ID Coeur D Alene
Paddle and Run - Team Short CoursePaddle and Run - Individual Short CoursePaddle and Run - Individual Long Course +1

Bear Lake Brawl Triathlon

Sat, Sep 19 · St Charles, ID St Charles
Triathlon Half Aquathlon (Swim 1.2 Miles, Run 13.1 Miles)Sprint - Short DistanceSprint Relay 2 to 3 People One Race +7

Idaho High Mountain Triathlon

Sat, Oct 3 · Yellow Pine, ID Yellow Pine
Triathlon Idaho High Mountain Relay TriathlonIdaho High Mountain TriathlonIdaho High Mountain Adaptive Triathlon +2

River & Rails Donkey Dash

Sat, Oct 10 · Cambridge, ID Cambridge
Road River & Rails Donkey Dash 3 Mile (NO DONKEY)River & Rails Donkey Dash 3 Mile - you MUST have a donkey prior to registeringRiver & Rails Donkey Dash 6 Mile (NO DONKEY) +3