Provo Boat Harbor, Provo, UT. Dare to freeze your buns off at this winter 5K paired with a penguin plunge into icy water in Provo. Race the 5K and finish at Utah Lake where a freezing (but safe) dipping spot has been cut into the ice. A safety cage and ladder ensure you won’t float beneath it, and all plungers take home a commemorative medallion and bragging rights.