Dude, compare these pics. I once had a Trek 720 and measured the frame. The measurements came out identical to Trek 520. You will not get the benefit of double-butted-made-in-USA goodness and the rear wheel dropouts are a little different, but it does have the geometry. Oh, and no requisite third bottle mount or eyeletted rims. The beefier rims and double-butted frame came on the Trek 750.