Joined: Mar 2007
Posts: 9,088
Likes: 5,222
From: SF Bay Area, East bay
Bikes: Miyata 618 GT, Marinoni, Kestral 200, Soma double cross 2002 Trek 5200, KHS Flite, Koga Miyata, Schwinn Spitfire 5, Mondia Special, Univega Alpina, Miyata team Ti, Santa Cruz Highball, Waterford rs11
At 5'7", you should be looking at a medium bike. Go to a bike store and try a few out.