Beaver Lake Triathlon

AUG

30

2026

Beaver Lake Triathlon in Sammamish features a quarter mile swim, a 13.7 mile bike and a 4.3 mile run around Beaver Lake. The event includes lifeguards and a packet pickup pasta feed and requires USAT membership.

Sun 30 Aug 2026

Sammamish, Washington

Website

Full (1/4s 13b 4r) Relay Super Sprint

Always double-check with the organizer's website! This page may contain affiliate links.

Beaver Lake Triathlon 2026

The Beaver Lake Triathlon takes place at Beaver Lake in Sammamish, Washington. The event is a sprint triathlon that combines open water swimming, a road bike course, and a road run that includes sections on trails near the lake. Lifeguards are on duty for the swim portion. Free parking is available at the event site.

The bike route is a lollipop style course that goes through parts of King County and the City of Sammamish, and includes the climb up Duthie Hill. The route passes rural farm homes and offers views of the Cascade mountains. The run follows roads and trails around Beaver Lake and through the Beaver Lake Estates neighborhood and wooded areas.

All registrants must hold a USAT membership; one day memberships are available. Packet pickup is scheduled with a pasta feed on August 29, 2026 at the Redmond Town Center Flatstick Restaurant and Grill. Entry includes race packet pickup and a race T-shirt for registrants; some entry types include additional items such as a finisher medal and pasta feed access.

Distances for the main event are: Visit the organization's website for the most recent information.