I've just finished wiping the blood off of me from my first ride. It was seriously awesome. There was only four of us but the other three drove the pace up to 17mph frequently and I stayed on their wheel! Somehow. I have no idea. On the way back my back wheel caught a crack and dumped me into a curb at 19mph but I made it away with just road rash and some destroyed bar tape. I'm totally doing this next week, honestly I wish I had been doing this years ago!