I started running at 45, and cycling a few years later. I never ran more than the mile they made my run in gym class in HS. I'm 55 and have run 12 marathons. My

I started running at 45, and cycling a few years later. I never ran more than the mile they made my run in gym class in HS. I'm 55 and have run 12 marathons. My 20, 30, 40 year old self would have never guessed.