Idaho
Idaho Triathlon Calendar 2026-2027
Monthly updates for Idaho
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Explore the best triathlons in Idaho for 2026-2027! Our updated list features 13 exciting races across the region. Find your next race in Idaho below and join the running community at these great events!
June 2026
Take on a flat, closed course along the Boise River at Esther Simplot Park in the USAT sanctioned Treasure Valley Triathlon, serving as the Idaho State Championship. Super Sprint, Sprint, Olympic, relays, adaptive categories and a youth Splash and Da..
Take on the Blackfoot KICKER Triathlon at Jensen Grove in Blackfoot, ID on June 13, 2026. Choose from sprint to Olympic distances, duathlon and run only options, or join a two person sprint team for a fast, fun race day.
Experience the Mary Lou Triathlon at beautiful Deyo Reservoir with a 300 yard swim, about a 13 mile bike on gravel and forest roads, and a 2.2 mile run around the water. Low key, scenic race with camping available nearby.
Experience IRONMAN 70.3 Coeur d'Alene with a 1.2 mile swim in Lake Coeur d'Alene, a 56 mile bike through rolling Idaho terrain and a 13.1 mile run along scenic lakeside paths. The race offers World Championship qualification and a top ranked swim cou..
July 2026
Race the Hayden Sprint Triathlon at Honeysuckle Beach in Hayden Idaho on July 11, 2026 for a fun, fast sprint with solo, relay, Athena and Clydesdale divisions. Proceeds support local community causes, so every finish gives back.
Join the Rigby Lake RUMBLE Triathlon on July 11 2026 at Jefferson County Lake for sprint and Olympic distances plus runs and two person teams. Expect a flat, fast course, comfy lake swims, and supportive volunteers.
Experience the inaugural IRONMAN 70.3 Boise on July 25, 2026, a scenic race through Boise and its foothills with a reservoir swim, hilly bike and flat run. This world championship qualifier blends urban views and rugged local scenery for a memorable..
August 2026
Race the Great Snake River Triathlon in Idaho Falls on Aug 15 2026 with triathlon, duathlon and a 5K for all abilities. Youth divisions and sprint and Olympic distances make this Tri Peaks Epic Events day scenic and family friendly.
Make waves at the Priest Lake Triathlon on August 30, 2026 in Idaho, with sprint and team relay options on both road and off road courses. Scenic lake views and choices for solo or relay racers make this a must do summer challenge.
September 2026
Paddle and run at scenic Higgens Point and Blue Creek Bay in Coeur d'Alene, choose kayak or SUP with short and long course options for solo racers or teams. Enjoy post race food, awards, and support Companions Animal Shelter.
Join the Bear Lake Brawl Triathlon at scenic Bear Lake State Park in Idaho on September 19, 2026. Choose Sprint, Olympic, Half 70 1/3 or virtual races, with relay and alternate half distance formats to match your goal.
Join the Rexburg RUSH Triathlon at Wakeside Lake on September 19, 2026, with Sprint and Olympic triathlons plus duathlons and team options. Produced by TRI PEAKS EPIC EVENTS, this popular lakeside race welcomes all levels.
October 2026
Join a scenic point to point tri through Idaho high country on October 3, 2026, from Warm Lake to Yellow Pine. Individual, relay and adaptive teams welcome with free local camping and an after party in Yellow Pine.