http://www.datapointed.net/2009/11/the-steeps-of-san-francisco/ http://www.datapointed.net/2009/11/the-steeps-of-san-francis... cites it at 37% grade (37' rise

http://www.datapointed.net/2009/11/the-steeps-of-san-francisco/ http://www.datapointed.net/2009/11/the-steeps-of-san-francis... cites it at 37% grade (37' rise for 100' run, approx 20 degrees).