The Coit Tower stairs make for a great outdoor workout in San Francisco. There are 2 sets of stairs (Greenwich Street and Filbert Street at Sansome), so don't worry, you won't get bored...just tired!
There are 2 sets of stairs for Coit Tower on Sansome St. The first set is at Greenwich and the second is at Filbert. The Filbert steps are a little deeper per step and are mostly wood and concrete. The Greenwich steps are a little tougher because of the shallower, brick stairs as you get toward the top. Either set is a great workout if you're looking to get your fitness on.

