Career
He represented Burundi at two Olympic games (2004 in Athens, and 2008 in Beijing). At age 31, Nshimirimana first competed at the 2004 Summer Olympics in Athens, where he finished thirty-second and completed the run in the men"s marathon, with a time of 2:19:31. At his second Olympics in Beijing, on the other hand, he finished the men"s marathon, just 12 seconds behind Israel"s Haile Satayin, with a time of 2:29:55.