A classic must-do climb for everyone visiting Boulder, Colorado. The climb starts at the base of the beautiful Chautauqua Park and then snakes its way up through a natural amphitheatre. The climb has an average grade of 8.5% and a maximum grade of 14% before finally easing off at the Cherryvale fire station next to Kossler Lake. This ride goes all the way to the top of what’s locally called, “Super Flag.”