Outside of his Olympic medal, his achievements include wins at the Beppu-Ōita Marathon and the Tokyo International Marathon.
Koichi Ishii | Koichi Zenigata | Koichi Wakata | Koichi Wajima | Koichi Sakamoto | Koichi Nakamura | Koichi Domoto | ''Ruddock with Koichi Tohei Sensei in Iidabashi dojo (photo by Henry Kono)'' | Koichi Yamaguchi (bicycle framebuilder) | Koichi Yamaguchi | Koichi Tohei | Kōichi Tōchika | Koichi Tanaka | Kōichi Tabuchi | Koichi Sasada | Koichi Ohata | Koichi Nakano | Kōichi Morita (songwriter) | Kōichi Morita | Koichi Kato |