When I went to be fitted for my road bike they measured my arms, my torso, my legs as well as my height.Then they put me on a machine with a bar between my legs to get the right fit there.Then he put in all info into a computer and from that he moved forward to telling me what size I needed (which was smaller than he had antisipated by just looking at me). Then he put me on the trainer and made more adjustments to the seat as well as having me practice clipping in and out several times. The WHOLE process of fitting me, finding the right size bike and test riding it, shoe fitting, doing the trainer took about 2 hours total. I felt like they took their time to really get the bike adjusted to be a perfect fit for me. They told me the importance of a great fit and how people (new to riding bikes) stop riding because often they've bought a bike at WalMart that's too big for themselves and therefore are uncomfortable riding and they quit after a while. They stressed it should take a good bike shop about an hour or maybe more to properly fit a NEW rider.