I made my introduction here http://www.bikeforums.net/showthread...om-St-Louis-MO but in summary I have lost 170 lbs in the last three years by running but my old man knees said no more and surgeon said get a bike. I am wondering a good starting distance. As a point of refernece I was running 5k 4-5 times a week in about 33 min(when I started at 450lbs it took a hour to waklk 1/3 of a mile with numerous park bench rest stops) Anyway I'm picking my bike up Wednesday and was thinking 10 miles might be a good starting place. Any good advise will be valued!!