Lake Sammamish Polar Plunge

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Make a splash at the Polar Plunge at Lake Sammamish State Park !

Polar Plunge returns on New Year’s Day 2025. Festivities will begin at 10:30 a.m. with registration, music, and merriment brought to you by Clown Garage on the shores of Sunset Beach. The crowd will “plunge” at noon.

The first 300 registered participants will receive a Polar Plunge SWAG bag, including a commemorative pin from local company Pins by Design..

Spectators are welcome to come out to cheer on the athletes as they take a dunk in the chilly waters of Lake Sammamish.

Schedule for the Plunge:

Registration opens 10:30

  • HIIT class with Fit4Mom 11:00

  • Costume Contest judging: 11:30

  • Plunge at 12:00

Please dress for the weather and bring water shoes and/or socks.

Visitors will not need a Discover Pass to park at Lake Sammamish State Park.

For more information on how to register or volunteer visit Polar Plunge 2025 — Friends of Lake Sammamish State Park Website | Support, Enhance and Promote Lake Sammamish State Park

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