Hi Christine,

I test rode the Trek 5200 WSD a couple of weeks ago so can comment on that one. First off, the smallest size this model comes in is 47 cm. I guess Trek doesn't think that tiny women can be serious cyclists as this is their top of the line, all carbon, WSD bike. I ride the 17.5" Terry Isis mentioned above and am 5'2" with a 28" inseam. I had fine standover on the WSD, but the top tube felt a bit long - I felt a bit stretched out. It's possible that a stem change would have helped this. However, if the bike felt a bit big to me, it would certainly be too large for someone 4'10".

That said, I do think that some of other Trek WSD models come in a smaller size (43 cm, I believe) - just not the 5200.

Good luck!
Emily