You know Atlanta has some nasty hills. We want to rank the gnarliest, down to the gnar-least, in two categories: City of Atlanta; and Not-Atlanta ITP. If you want something outside that, go start "Vert in the Exurbs" or "OTP to the TOP," or whatever.
Below is a non-comprehensive starter list: go find them, ride or run 'em, and record and report your science. Then scout and submit your own! Drop a line to email@example.com with your good news, O seekers, and we'll update the list the first Thursday of every month.