I am a 45 year old mechanical designer, I'm basically a MTB'r however I just bought a skinny tire a month ago and I am really enjoying it.
I live in SLC Utah and ride pretty much year round.
My Mountain Bike is an '03 Kona DawgDeelux, My road bike is an '04 Railiegh Competition. I try to get 20 miles a day on one or other of my bikes.
I commute to work in the summer, thats about 28 miles round trip but now winter is upon us I'm a lunch time warrior. We have a couple of different courses we ride that are 20+ miles.
My mentor is xray, who by the way is an animal on a bicycle.