There are 83 running races in Idaho in 2026 across 39 cities. The next upcoming race is the Founders Day Fun Run in Lava Hot Springs on July 25. Popular distances include 5K races, half marathons, 10K races.

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Boise Front Trail Festival

Fri, Jul 31 · Horseshoe Bend, ID Horseshoe Bend
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 DuathlonAdult Individual Duathlon +3

PEAK 7B Youth Triathlon

Fri, Aug 28 · Sandpoint, ID Sandpoint
Triathlon SPRINT(Adult) Athlete Assist- MINI SPRINT(Adult) Athlete Assist- SPRINT +1

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

TVDSA Step Up for Down Syndrome - 2026

Sat, Sep 12 · Caldwell, ID Caldwell
TVDSA Step Up for Down Syndrome - Adult Size ShirtTVDSA Step Up for Down Syndrome - Member w/ Down SyndromeTVDSA Step Up for Down Syndrome - Child Size Shirt

Jen McKenna Paddle and Run 6.0

Sat, Sep 12 · Coeur D Alene, ID Coeur D Alene
Paddle and Run - Individual Short CoursePaddle and Run - Team 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 Adaptive TriathlonIdaho High Mountain Triathlon Adaptive RelayIdaho High Mountain Relay Triathlon +2