When Sat, Aug 16, 8 -10am Source Mount Washington Hillclimb Description On Saturday, August 16, 2025, riders will race to the summit of Mt. Washington in what's been called, "the toughest hillclimb in the US, if not the world", the Mt. Washington Auto Road Bicycle Hillclimb (MWARBH). This race is hosted and benefits Tin Mountain Conservation Center.TIMELINE: March 1st: MWARBHRegistration OpensApril 1st: Early Bird / Practice Ride Registration Opens July 13: Practice RideAugust 16 (17th raindate): MWARBH