Polar Plunge 2026

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

Polar Plunge returns on New Year’s Day 2026. Festivities will begin at 10:30 a.m. with registration, food, music, and merriment 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 10:45

• Yoga at 11:30

• Costume contest 11:45

• Plunge at 12:00

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

Enjoy some Coffee by Cafe Lladro, Tea from Gathering Abundance, Bagels from Blazing Bagels, and Ivar's Clam Chowder!

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

All proceeds from Polar Plunge will be used to support programming and restoration projects at Lake Sammamish State Park