He finished seventh in the 2004 Summer Olympics marathon in Athens, making him one of the few athletes[quantify] in Olympic history to finish in the top 10 at three separate marathons.
Wainaina ran in the marathon at the 1995 World Championships and finished in 18th place.
[1] Wainaina frequently competed in Japanese races: he is a two-time winner of the Tokyo International Marathon, having taken the title in both 1995 and 2002.
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