He went to Embomir Primary School and Kerio Valley Secondary school, from which he graduated in 2004. He did not take up running until 2007, later quoting
"I saw I was not making any progress in life and my family needed assistance". Kitwara won four national cross-country circuit competitions in 2008, but failed at the trials for the cross-country world championships. In 2008 he took to the European road running circuit and won at the
20 Kilomètres de Paris,
Dam tot Damloop and
Singelloop Utrecht races. Kitwara, a policeman by occupation, won the 2009
Rotterdam Half Marathon in a time of 58:58 – a course record which made him only the sixth runner to complete a sub-59-minute run. and recording 59:47 minutes for second at the
Lisbon Half Marathon behind a
world record-beating
Zersenay Tadese. Kitwara is a three-time champion of the
Bay to Breakers and the course record holder in that event. In 2009, race organizers reported that his 33:31 was the fastest 12 km ever run. In 2010, he edged out fellow Kenyan
Peter Kirui by less than a second for the victory in 34:15. He ran a personal best for the 10K at the Utrecht Singelloop in September 2010, finishing as runner-up with a time of 27:11 minutes. This elevated him into the top eight of all time, although race winner
Leonard Komon overshadowed this achievement by breaking the
world record by a large margin. Kitwara took his second win at the World's Best 10K in February 2011, becoming one of three men (including
Hendrick Ramaala and
John Korir) to have won twice in Puerto Rico. He was out-stripped at the City-Pier-City race in March, however, as he came fifth while
Lelisa Desisa (whom he had beaten in Puerto Rico) won the race. He won his second title at the Peachtree Road Race in July that year. Later that year he ran a 58:48-minute personal best for second place at the
Philadelphia Half Marathon, making him the fourth fastest runner ever for the distance. He did not reach the same form in November, when he came fourth at the
Delhi Half Marathon. He opened 2012 with another win at the World's Best 10K, completing the course in 28:02 minutes. He attempted a
marathon debut at the
Rotterdam Marathon (where he has acted as pacemaker before), but did not finish as he dropped out after 30 km. In October, he was placed fourth at the
2012 Chicago Marathon with a time of 2:05:54 hours. He won his third straight World's Best 10K title at the beginning of 2013. A return to the Rotterdam Marathon saw him complete the distance, although his time of 2:07:22 hours was slower than his last. At the 2015 London Marathon he came 6th in 2.07.43. Kitwara won the 2016 Lisbon half marathon in 59.47 some way off his personal best. ==Performances==