Koji Shimizu (清水康次, Shimizu Kōji; born October 17, 1969) is a retired male long-distance runner from Japan. He set his personal best (2:08:28) in the men's marathon event on March 2, 2003 at the Lake Biwa Marathon.
Source: “Kōji Shimizu”, English Wikipedia (CC BY-SA 4.0), excerpt