Klete Keller
From Openwaterpedia
Klete Keller (born 21 March 1982) is an American distance freestyle swimmer who won Olympics medals at the 2000 and 2004 Olympics in the 400m freestyle and the 4×200m freestyle relay. He also competed in a number of open water swims during his illustrious career.
He has also won multiple titles at the NCAA, USA Swimming and FINA levels in individual and relay events.