I'm relatively new to cycling. I've been a runner off and on most of my life. I'm 27 now, and back in my late teens up until 20 or 21... I was a hardcore runner and weighed 145-150lbs. From then up until this spring, I shot up as high as 210. For the first time since 2004 I'm below 155lbs, and in phenomenal shape. At a regional cycling level, I doubt age will be a factor if you're dedicated and passionate about it. Atleast if you're under 40.