Seattle
Triathlon Calendar near Seattle 2026-2027
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Explore the top triathlons near Seattle for 2026-2027! We've gathered 6 exciting races in the area. Check out our detailed list below to find your next local race.
July 2026
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.
August 2026
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 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.
September 2026
A sprint triathlon at Rattlesnake Lake on Labor Day weekend 2026 featuring a 1/4 mile swim, a mixed road and trail bike, and a 4 mile run through Rattlesnake and Cascades Park.