Hmmm, I've managed to miss this thread for quite a while. I'm 46, about to turn 47 in may. funny, I was just thinking about cycling and aging... I was pleasantly surprised to find yesterday on a club ride, that my fitness level had improved so much that, I had gotten to be faster up the hills than a woman who was pretty consistently kicking my butt on those same hills last year. I thought we were the same age, but turns out, she's 75! I think I wanna be her when I grow up! It's good motivation to keep at it!