The Mt. Washington Auto Road Bicycle Hill Climb is known as the toughest hill climb in the world at 7.6 miles in length, with an average grade of 12%, extended sections of 18%, and an amazing 22% for the last 50 yards. The 7.6 one-way, all uphill Mt. Washington Auto Road Bicycle Hillclimb to the summit of … Continue reading Mount Washington Hill Climb, August 15, 2026