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 14 exciting races across the region. Find your next race in Idaho below and join the running community at these great events!
June 2026
IRONMAN 70.3 Coeur d'Alene on June 21, 2026 features a 1.2 mile swim in Lake Coeur d'Alene, a 56 mile bike through rolling hills, and a 13.1 mile run along lakeside paths.
July 2026
Experience a community focused triathlon at Honeysuckle Beach in Hayden. This non profit event features individual and relay options along with inclusive categories like Team Hoyt and Athena divisions.
A multi-format event at Jefferson County Lake in Rigby, Idaho on July 11, 2026, featuring sprint and Olympic triathlon distances, duathlon races, 5K and 10K runs, and a two-person sprint team category.
A new IRONMAN 70.3 in Boise on July 25, 2026 combines a river and reservoir swim, a hilly bike through the foothills and a flat run along the greenbelt. The race is a World Championship qualifier and highlights local scenery.
August 2026
The Post Falls Sprint Triathlon and Duathlon take place at Q'emiln Park along the Spokane River on August 2, 2026. Events feature a 0.3 mile swim, a 12 mile bike and out and back runs between Q'emiln Park and Falls Park.
A triathlon and duathlon at Coeur d'Alene City Park and Beach on August 8, 2026. Athletes swim from cruise ships into the bay, bike along the lakeshore, and run on the Centennial Trail.
A multi-discipline event at Snake River Landing in Idaho Falls on August 15, 2026, featuring sprint and Olympic triathlon distances, youth divisions, duathlon options and a 5K run.
A late summer multi sport event at Wilson Lake Reservoir on August 29, 2026 offering triathlon, duathlon and 5K and 10K race options with chip timing, live music, marked courses, and volunteer support.
Sprint road bike and off road triathlons plus road and off road team relays take place at Hill's Resort in Priest Lake on 08/30/2026, with distinct fees and a specified registration window.
September 2026
A paddle-and-run event at Higgens Point, Coeur D Alene on September 12, 2026, with short and long courses offered for individuals and teams. Event proceeds benefit Companions Animal Shelter.
A fall sprint event in Moscow, ID combining a 500 yard pool swim, a 15K bike and a 5K run, with a simultaneous duathlon option. The race is USAT sanctioned and supports several local community organizations.
Experience the mountain scenery of Bear Lake State Park at this multi distance triathlon event. Choose from Sprint, Olympic, or Half distances and enjoy the blue waters of the Caribbean of the Rockies.
Rexburg RUSH Triathlon takes place at Wakeside Lake in Rexburg, Idaho on September 19, 2026. The event includes sprint and Olympic triathlon distances, duathlon options, 5K and 10K runs, and a sprint team division.
October 2026
A point to point triathlon in eastern Valley County Idaho from Warm Lake to Yellow Pine via a 7300 foot summit. Multiple divisions include able bodied, adaptive, and relay formats with awards and an after party in Yellow Pine.