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Triathlon Calendar near Issaquah 2026-2027

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Monthly updates for Issaquah

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Explore the top triathlons near Issaquah for 2026-2027! We've gathered 7 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 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 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.
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.
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.
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