His personal best times are 3:33.63 minutes in the 1500 metres, achieved in June 2008 in Rabat; 3:52.98 minutes in the mile run, achieved in June 2009 in Ostrava; and 7:49.65 minutes in the 3000 metres (indoor), achieved in January 2009 in Glasgow. Also, at the Memorial Van Damme meet in September 2009 he set a new world record in the rarely contested 4 x 1500 metres relay. The time was 14:36.23 minutes, and it was achieved with teammates William Biwott Tanui, Geoffrey Kipkoech Rono and Augustine Kiprono Choge.
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