Education
In August the same year she finished fourth at the World Championships in a world junior record time of 9:25.25 minutes.
In August the same year she finished fourth at the World Championships in a world junior record time of 9:25.25 minutes.
The old record was 9:30.70 and belonged to Melissa Rollison. At the 2008 African Championships in Athletics she finished third. Bosibori was born in Bosiango village near Kisii.
She started running in 2003 while at Kebirichi Secondary School.
She was recruited by Kenya Police after winning provincial championships in 2007. She is used to competing barefoot.
She was coached by Dan Muchoki till 2007, after started to be followed by the Italian coach Renato Canova, when went under the management of Gianni Demadonna. In 2009, she improved her personal best to 9:13.16, winning at the 2009 IAAF World Athletics Final by a margin of seven seconds.
She wants to come back in the late 2011, looking at Olympic Games 2012 in London.