In July 2007 she became the first All-Africa Games champion in the event, as it was staged for the first time. 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 won the Most Promising Sportswoman of the Year category at the 2007 Kenyan Sports Personality of the Year awards. 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.
During 2010, she gave birth to her daughter Glory (in September). She wants to come back in the late 2011, looking at Olympic Games 2012 in London.
|2007||All-Africa Games||Algiers, Algeria||1st||3000 m s'chase||9:31.99|
|World Championships||Osaka, Japan||4th||3000 m s'chase||9:25.25|
|2008||African Championships||Addis Ababa, Ethiopia||3rd||3000 m s'chase||10:00.18|
|Olympic Games||Beijing, China||6th||3000 m s'chase||9:17.35|
|World Athletics Final||Stuttgart, Germany||3rd||3000 m s'chase||9:24.38|
|2009||World Championships||Berlin, Germany||7th||3000 m s'chase||9:13.16|
|World Athletics Final||Thessaloniki, Greece||1st||3000 m s'chase||9:13.43|
- "IAAF: 100 Metres - men - senior - outdoor - 2018 | iaaf.org". iaaf.org. Retrieved 2018-05-03.
- Addis 2008 results
- Daily Nation, November 2, 2007: Bosibori's world record ratified
- The Standard, August 19, 2007: Humble Bosibori to keep tradition
- Japan Times, August 29, 2007: Worlds notebook; Day 4
- SOYA Awards - 2007 winners
- IAAF: August 4, 2007: Focus on Africa - Ruth BOSIBORI
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