We're updating our camping and moorage fees to continue providing great experiences for visitors amid inflation and rising costs. You will see a rate increase for camping stays booked for May 15 and beyond. Moorage fees will increase Jan. 1. Learn more here.
Lake Sammamish Polar Plunge
There are currently no future events scheduled.
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.
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
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HIIT class with Fit4Mom 11:00
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Costume Contest judging: 11:30
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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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