He graduated from Lelboinet Secondary School in 1998. The next year he qualified for the 1999 IAAF World Cross Country Championships, where he finished sixth at the junior race. The Kenyan Army recruited him in 2001.
He now trains with Daniel Komen who was Kenya's foremost runner for a while. Kipketer broke the 3,000m junior world record twice when he was 17. He has also broken the 13-minute barrier for the 5000 metres. He won a 10000 metres in Brussels with his personal record time of 26:49.38. Right now he is focusing on 10-kilometre races.
He won the Parelloop 10K in race in the Netherlands in 2001,[2] setting a new world record of 27.18 minutes. Haile Gebrselassie ran the distance in 27:02 minutes in 2002 in Doha, IAAF recognised the time as world record, while ARRS rejected it claiming Gebrselassie got assistance by a vehicle. Thus Kipketer's time is still a valid ARRS world record (as of 2007), although Micah Kogo has since set a better time, still awaiting ratification by ARRS.[1]