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 31 exciting races across the region. Find your next race in Washington below and join the running community at these great events!
May 2026
A 15-mile duathlon at Kiona Vineyards and Winery featuring a cross-country run, a 10-mile mountain-bike loop, and a final run; individual and two-person team divisions include a separate gravel-bike category.
Practice your triathlon skills in a supportive non-competitive environment at Vancouver Lake. This learning focused event features instructional clinics and a choice of sprint or olympic training distances.
A spring super-sprint triathlon at Lake Wilderness with a quarter-mile swim, mixed-surface bike route across the Cedar River trestle, and short run options plus relay and youth Splash n Dash formats.
An Olympic-distance triathlon at Bennington Lake on May 17, 2026, with a 300-athlete cap, multiple race categories including relays and Special Teams, a rolling 40 km bike course, and USA Triathlon sanctioning.
A USAT sanctioned super sprint at Cascade Lake on Orcas Island featuring a 1/4 mile swim, 13 mile road bike and 5k trail run, with solo and relay entries, finisher medals, race shirts, and a postrace pasta feed.
A swimrun event on May 31, 2026 at Rosario Resort in Eastsound, WA with World Series, Sprint and Experience categories for solo athletes and teams. Registration runs from October 31, 2025 to December 1, 2025.
ÖTILLÖ Orcas Island is a swimrun in Washington combining lake swims, forest runs, and mountain climbs. Three course options span roughly 10 km to 39 km, with mandatory safety gear and packet pickup at Rosario Resort.
A lakefront triathlon at Medical Lake Waterfront Park with 1/4 or 1/2 mile swims, out and back bike sections on SR 902, and lake run loops. Relay options available and entries include a pasta feed, event shirt, and finisher medal.
June 2026
Rainier Raid is an adventure race in the Pacific Northwest on June 5 to 7, 2026, with 36 hour and 12 hour formats featuring mountaineering, biking, trekking, canyoning and white water. It is a USARA and ARWS regional event.
Lake Wilderness Triathlon at Lake Wilderness Park on June 6, 2026 brings Olympic and sprint triathlons, a duathlon, relay teams and running races including a half marathon, 10K and 5K, with proceeds supporting local charities.
An inaugural Half Iron triathlon in Vantage, WA featuring a 1.2 mile Columbia River swim, a 56 mile out and back bike toward Ellensburg, and a 13.1 mile run. Relay teams are permitted and a mandatory safety briefing is scheduled.
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.
A multisport event at Nolte State Park near Enumclaw, Washington, offering Olympic, Sprint, AquaBike, Super Sprint and relay options. The race starts with a Deep Lake swim and continues through Ravensdale, Selleck and Enumclaw farmland.
Choose between competitive or recreational distances at Lake Padden Park in Bellingham. This chip timed triathlon features scenic lake swimming and road cycling for solo racers and relay teams.
A USAT super sprint at Pine Lake Park featuring a 1/4 mile swim, an 11 mile hilly bike, and a 4 mile run. Individual and relay entries include event shirts, finisher medals, and a cash bonus for beating the course record.
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.
Wildcat Lake Triathlon in Bremerton combines a 1/4 mile swim, a 16 mile road bike and a 4 mile trail run at Wildcat Lake Park and includes a technical long sleeve T shirt and 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.