Meet the EXPERTS

With the help of a panel of trainers, strength and conditioning coaches, performance experts, pro athlete coaches and more, SI’s editors set out to answer the question: Who are the fittest athletes in all of sports? Athletes were assessed based on characteristics that define fitness and conditioning: strength, speed, endurance, agility, flexibility and skill in his or her respective sport.


owner of Total Athletic Performance

Courtesy of Derek Touchette
Joe defranco

Pro athlete trainer and founder of DeFranco’s Gym

Courtsy of Joe DeFranco
harry marra

Multi event coach,
Oregon Track Club

Courtesy of Harry Marra

Director of center of excellence for sport science, East Tennessee State University

Courtesy of Meg Stone

EXOS Director of Performance

Courtesy of Jennifer Noiles
Carrie Tollefson

former olympian and tv analyst

Courtesy of

Meet the 50 fittest