He is a Kenyan marathoner and the World record-holder in a time of two hours, two minutes and fifty seven seconds. Kimetto set the record at 2014 Berlin Marathon. He also holds the World record in 25km. Kimetto finished third at the London Marathon in 2015. He won the Chicago Marathon in 2013 in a course record time of two hours, three minutes and forty five seconds. He requested Athletics Kenya not to consider him for selection because he is set to participate in other marathons soon after the Rio Olympic Games.