I ride with the local high school MTB team, who does road for fitness. I am 26, so I have a few years on all of them, but it is still a lot of fun. I keep up with them without much of a problem on the flats, but on the steep climbs I am towards the back ...

Wish I had gotten into cycling at that age. It is kind of fun though, listening to them talk about their classes / driving / computers. 10 years does make a big difference.