Washington
Washington Triathlon Calendar 2026-2027
Monthly updates for Washington
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Explore the best triathlons in Washington for 2026-2027! Our updated list features 21 exciting races across the region. Find your next race in Washington below and join the running community at these great events!
June 2026
Experience a multisport weekend in Medical Lake featuring triathlon duathlon and 5K run options. Compete on paved roads and scenic trails around Waterfront Park during this annual community celebration.
Black Diamond Triathlon on June 27, 2026 at Nolte State Park offers Olympic, Sprint, AquaBike, Super Sprint and relay options, with a Deep Lake swim and bike and run courses through Ravensdale, Selleck and Enumclaw, plus race amenities for all finish..
A community triathlon at Lake Padden Park on June 27, 2026 offering long and short chip-timed courses with mapped bike and run routes, revised 2026 bike routes, participant rules, and a 325-person field limit.
Pine Lake Triathlon at Pine Lake Park features a 1/4 mile swim, an 11 mile hilly bike, and a 4 mile run around the lake. Individual and relay entries are offered and USAT membership is required.
July 2026
A sprint triathlon at Howard Amon Park with a 0.5 mile river swim, 12 mile mountain-bike course including single-track, and a 3 mile run. Online registration is limited to 300 individuals and 25 teams.
A lakefront triathlon at Wildcat Lake Park featuring a quarter mile swim, 16 mile rolling road bike and a 4 mile trail run. Race packages include a long sleeve technical shirt and a finisher medal.
A day of multi-distance triathlon and duathlon racing at Seward Park on Lake Washington, featuring sprint and super sprint triathlons, relays, a sprint duathlon, and kids courses with varied swim, bike and run distances.
Aquaman at Howard Amon Park on July 31, 2026 combines a half mile swim in the Columbia River with a three mile run along park footpaths. Online entry is limited to 300 athletes and includes youth team categories for ages 13 to 18.
August 2026
A USAT sanctioned multisport day at Lake Tye Park in Monroe on August 1, 2026. Events include Sprint, Olympic, youth, duathlon, aquabike and a 5K run with relay and weight division options, medals and post race food.
A sprint triathlon at Sullivan Lake in the Colville National Forest near Ione, Washington. Swim in the lake, bike along Sullivan Lake Road and run out to Harvey Creek Bridge, with participant shirts, swim caps, bibs and a finisher medal for finishers..
A weekend triathlon and endurance sports festival in Vancouver, WA featuring Sprint and Olympic triathlons, duathlons, aqua bike and paddle events, Friday 5K and 10K runs, a Kids Triathlon, women's sprint options and virtual races.
An all-women triathlon festival at Frenchmans Bar near the Columbia River featuring sprint triathlon, duathlon, aquabike, a 5 km run and a Kids Triathlon, with USAT rules, chip timing and awards across age and division categories.
A one-day triathlon at Lake Meridian Park in Kent, Washington on August 15, 2026 offering Olympic, Sprint, Super Sprint and relay formats. Finishers receive medals and top age-group athletes earn pint glasses; race T-shirts are guaranteed for registr..
A non-competitive multisport event on Kenmore's waterfront combining a swim, bike, run and a paddle leg. Participants may enter solo or in relays up to four people; registration includes a t-shirt and entry into a prize drawing.
A one-day triathlon in Richland featuring Olympic and sprint distances plus 3-person relay divisions, with a river swim, looped bike and run courses, chip timing, limited field size, and online-only registration.
A sprint triathlon at Beaver Lake in Sammamish with a 1/4 mile swim, about 13 to 14 mile bike loop and a 4.3 mile run through lakeside neighborhoods and forest. Entries include a race shirt and pre-race pasta feed.
A multi-distance triathlon at Allan Yorke Park on August 30, 2026, with swim, bike, and run courses around Lake Tapps and Pierce County. The event serves as the RTB Summer Series finale and is part of the Trifecta Trident challenge.
Off road triathlon at Lake Padden with an 800 m swim, 9 km mountain bike loop, and 4.1 km trail run. Solo or relay options, USAT sanctioned and capped at 200 athletes.
September 2026
A Labor Day weekend sprint triathlon at Rattlesnake Lake near North Bend. The course features a 1/4 mile swim, a 10 mile mixed road and trail bike on the Palouse to Cascade trail, and a 4 mile run through Rattlesnake and Cascades Park.
IRONMAN 70.3 Washington Tri Cities in Richland, Washington includes a 1.2 mile downriver swim in the Columbia River, a 56 mile bike through vineyards, and a flat 13.1 mile run finishing at Columbia Point Park. The race sits in Washington wine country..