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 18 exciting races across the region. Find your next race in Washington below and join the running community at these great events!
July 2026
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. Features a 750 m lake swim, a 20 km bike on Sullivan Lake Road and a 2.5 km out and back run, with youth and team categories available.
A multi-distance aquathon at Beaver Lake with swim and run options, certified lifeguards, and USAT membership required.
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.
All-women’s triathlon and fitness festival on August 9, 2026 at Frenchmans Bar in Vancouver, WA, featuring sprint triathlon, duathlon, aqua-bike, a 5 km run, and a kids triathlon; event benefits the Northwest Association for Blind Athletes.
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 multi discipline event at Beaver Lake in Sammamish with a 1/4 mile swim, a 13.7 mile bike and a 4.3 mile run. Relay, aquathlon and duathlon entries are available and USAT membership is required.
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.
A USAT sanctioned off-road triathlon at Lake Padden featuring an 800 m swim, a 9 km mountain bike loop, and a 4.1 km trail run. The event accepts solo racers and 2- or 3-person relays and includes a USAT one-day license.
September 2026
Sprint triathlon at Rattlesnake Lake featuring a quarter mile swim, a mixed surface 10 mile bike, and a 4 mile run near North Bend.
Columbia River Half Iron at Vantage Boat Ramp features a 1.2 mile swim, 56 mile bike and 13.1 mile run on September 6, 2026.
IRONMAN 70.3 Washington Tri-Cities in Richland, Washington features a 1.2 mile swim in the Columbia River, a 56 mile bike through wine country, and a flat 13.1 mile run on riverfront trails. The event received high athlete ratings for the swim.
A four-leg endurance event in Port Angeles combining mountain bike, kayak, 30-mile road bike and a 10K run with solo and team entries for ages 15 and up.
June 2027
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.
A chip-timed triathlon at Lake Padden Park on June 26, 2027, offering competitive and recreational swim-bike-run distances with course maps and a 325-person field limit.