Quote Originally Posted by Shimpie
Hmmm, I'm 5 feet (no inches) tall and I ride a Trek 2000 size 47. We're all built differently, but there is a 5 inch difference between us! Unless you have very short legs and a long torso (which is what I have) I'd say this bike a bit small for you.

What's your inseam? The Trek website says the standover height for this bike is 28 inches. Is your inseam close to this number? If your inseam is greater, then try the next size up.
Yes, my inseam is around 28, but it looks like I'll definitely take everyone's advice here (btw, thanks!) and actually get properly measured for the bike.