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

Early Bird registration begins November 24! Special Early Bird pricing in effect until December 10!

Polar Plunge returns on New Year’s Day 2026. 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 50 registered participants will receive a Polar Plunge 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 and Plunge HQ opens 10:30

• First Day Hikes 11am

• Yoga 11:30am

• Costume Contest 11:50am

• 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.

When and Where

Date & Time: January 1, 2026, 10:30AM-11:30AM
Where: Lake Sammamish State Park

Additional Details

Discover Pass is required for parking.
Registration required.