Washington
Washington Triathlon Calendar 2026-2027
Monthly updates for Washington
Get new running races (and updates) in your inbox every month.
Explore the best triathlons in Washington for 2026-2027! Our updated list features 18 exciting races across the region. Find your next race in Washington below and join the running community at these great events!
December 2026
A USAT sanctioned winter triathlon at Lake Sammamish with a 1/4 mile swim in 47°F water, a 10 mile bike and a 5k trail run plus hot coco at the finish line.
April 2027
USAT duathlon near Soaring Eagle Trail head with a 10 mile hilly road bike and a 5 mile technical trail run, includes long sleeve tech shirt and finisher medal.
May 2027
Multi-event day at Vancouver Lake Regional Park with a duathlon (5K, 12.91 mile bike, 5K), plus a half marathon, 10K and 5K; parking included.
Olympic distance triathlon in Walla Walla on May 22, 2027 featuring a 1.5K swim, 40K bike and 10K run, with a 300 participant cap and postrace meal and beer.
June 2027
Triathlon, duathlon and running events at Lake Wilderness Park featuring lake swims, rolling bike routes and trails along the Cedar River.
Monthly updates for Washington
Get new running races (and updates) in your inbox every month.
A USAT sanctioned half Iron triathlon at Vantage with a 1.2 mile swim, 56 mile bike and 13.1 mile run along the Columbia River and nearby state park scenery.
Swimrun on Orcas Island on June 13, 2027 with three distances combining lake swims, forest trail runs, and island roads around Moran State Park.
A set of triathlon, duathlon, team relay, and 5K races at Waterfront Park in Medical Lake, WA, featuring an out-and-back open water swim and paved road and trail bike and run courses.
Seattle Solstice Run at Magnuson Park on June 19, 2027 features 5k, 10k, 15k, a kids dash and a duathlon on a USATF certified 5k loop.
A chip-timed triathlon at Lake Padden Park offering sprint and super sprint distances, revised bike routes, participant limits, and on-site measures to protect the lake.
Multisport event in Enumclaw with a swim at Deep Lake and bike and run courses through Ravensdale Selleck and Enumclaw farmlands.
July 2027
Multi-distance triathlon and road races in Vancouver, WA on July 10, 2027, featuring sprint and Olympic tri formats plus 5K, 10K, and a kids tri.
An all women triathlon and fitness festival on July 11, 2027 at Frenchman's Bar Regional Park in Vancouver WA featuring sprint multisport races, relays and a 5k.
USAT sanctioned triathlon at Wildcat Lake on July 18, 2027 offering individual and relay distances with included long sleeve race T shirt, sticker and cap.
August 2027
Beaver Lake Triathlon combines a 1/4 mile swim, a 13.4 mile bike up Duthie Hill and a 4.3 mile run around Beaver Lake, with multiple race and relay options.
Off road triathlon at Lake Padden, Bellingham with an 800 m swim, 9 km mountain bike, and 4.1 km gravel run; solo or relay options.
September 2027
Sprint triathlon at Newcastle Beach Park with a 1/4 mile swim, 13k off road bike and 8k run; USAT membership is required.
IRONMAN 70.3 Washington Tri-Cities features a downriver swim in the Columbia River, a rolling bike through vineyards and a flat riverfront run finishing at Columbia Point Park.