Hirokatsu Tayama
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Hirokatsu Tayama (born November 12, 1981) is a triathlete from Japan.
Tayama competed at the second Olympic triathlon at the 2004 Summer Olympics. He placed thirteenth with a total time of 1:53:28.41.
He earned recognition as one of the fastest swimmers in triathlon by being the fastest person to complete the 2.4 mile swim at the 2005 Ironman World Championships at Kona, Hawaii.