American Record) 10,000 m - 27:22.28 (2009) Half-Marathon - 1:00:00 (2009) Marathon - 2:07:47 (2012) References External links New Yorker profile of Ritzenheim and Coach Alberto Salazar 1982 births Living people Sportspeople from Grand Rapids, Michigan Track and field athletes from Michigan American male long-distance runners American male marathon runners Olympic track and field athletes of the United States Athletes (track and field) at the 2004 Summer Olympics Athletes (track and field) at the 2008 Summer Olympics Athletes (track and field) at the 2012 Summer Olympics Colorado Buffaloes men's cross country runners Colorado Buffaloes men's track and field athletes