More than 1,100 plungers make the Stillwater Polar Plunge a huge success with over $250,000 raised for the 11,600 athletes of the Special Olympics Oklahoma. Participate by challenging an individual or group to take a flying leap into the frigid waters at Boomer Lake! Proceeds go toward raising money for Special Olympics Oklahoma. You must be registered to plunge! Arrive and register at 10am with a $75 minimum donation. Polar Plunge is at 11am.