Have a close look at the geometry pages on Trek's website. I spent a few hours there before we got a new bike for the GF. She tried my Kona and loved the feel of the bike, but it just didn't fit her. Best thing for you to do is to measure up what you have and find what you like or don't like about it, then go shopping for a fit online. We came within a hair's breadth of exactly duplicating the geometry of her old Raleigh in a new Trek 4500, then polished it to a perfect fit with an adjustable stem, slicks, and a different saddle.