Boulder Polar Plunge Presented by Westerra Credit Union

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Saturday, March 16, 2018
10:00 am – 3:00 pm

Location: Boulder Reservoir, Boulder, CO

2019 Horizontal Polar Plunge SOCO Logo Gradient

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11:30 AM Registration & Plunge Plaza Opens

1:00 PM Plunge

1:30 PM After Splash Bash

Join us on Saturday, March 16th for a pre-St. Patty’s Day
Polar Plunge at the Boulder Reservoir!

For the first time ever, the Boulder Polar Plunge
falls on St. Patty’s Day weekend.

Plunge in your best St. Patty’s Day costumes
and win the coveted Irish Polar Bear trophy!

St. Pattys Polar Plunge

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Boulder Plunge Plaza

Stay warm by the s’mores fire pits and hot cocoa bar or with some warm, small bites from our vendor partners inside Plunge Plaza.


Boulder After Party

beerstock.0Party with us at the “After Splash Bash” hosted at The Rayback with one free beer per participant (21yrs+), food and more.

All free for participants!

Must show your event wristband!

Boulder Jousting Tournament

Join us for a supreme jousting tournament between Petey the Polar Bear and the St. Patty’s Day Leprechaun! We’re placing our bets on Petey!



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Plunge FAQ's

Can’t join us but want to support from afar, click here.

Every dollar counts towards our $55,000 fundraising goal and we’re grateful for your kindness and generosity!

Sponsor Recognition Lockup