Senior Moments

5 of 13

Jon "Bullett" Bales

Photograph By Gregg Segal for ESPN the Magazine

Age 68, Triathlon

The Glendale, Calif., resident and Vietnam vet began competing in triathlons when he was in his late 30s. He's logged 37 racesand dedicates every one to those whose names are on the Vietnam Veterans Memorial. "I'm driven by the fact that my brothers will never see these days," he says. "When I'm racing and I feel pain, I think to myself, This is nothing. Get your ass in gear."