I did 31 miles last Sunday. 1/2 of the Salem, Oregon Monster Cookie Ride. Never thought i could do it, and at the end of the day i felt good. Ok my butt was sore (looking for riding shorts now). We had beautiful weather and peanut butter and jelly never tasted so good at the 15 mile rest stop. We had a few practice rides before this one, the longest being 13 miles. Can't wait for the next ride!