Beaver Lake Triathlon 2026

Event Details and Schedule

Join us for the 2026 Beaver Lake Triathlon! The event includes a 1/4-mile swim in Beaver Lake, a 13.7-mile hilly road bike course (Duthie Hill), followed by a flat and fast 4.3-mile neighborhood run. The last half mile is through enchanted forests. Break the course record and get a cash bonus (current record: 1:14:12).

The weekend kicks off with a pre-race safety briefing on August 27, 2026, at 7 pm PDT via Live Stream. On August 29, 2026, at 4 pm, enjoy the pre-race Pasta Feed at Beaver Lake, accompanied by a Live band.

Race day check-in is at 7 am, followed by bike racking. Participants can form relay teams or corporate teams.

Awards ceremony for champions will be held at 3 pm after the race at Pine Lake Ale House.

The event is supported by the City of Sammamish and King County.

Parking and restrooms are available at the Beaver Lake starting line. Race day weather is typically cool (60s) and sunny.

Rules: No floatation devices allowed in the swim, no motorized bikes, and all bike handlebars need to be plugged.