For a man who has run over 100 marathons at least 100 miles long each and climbed to the top of all the seven summits of the world, it's hard to believe Marshall Ulrich was a bit of a coach potatoes until he was almost 30.

Older is bolder. Check out our interviews with many of the top masters athletes in the world. These men and women are having the best times of their lives as they turn in the best times of their lives.