Rubuta ci gaba don wannan sakin layi - Kibowen ya lashe lambar zinare a cikin gajeren tseren a gasar Olympics ta 1998
da kuma 2000 IAAF World Cross Country Championships, kuma ya gama na biyu a 2003. Ya lashe tagulla a Gasar Cin Kofin Duniya ta 2001 da na azurfa a Gasar Cin Kofin Duniya ta 2003, ya kammala na hudu a Gasar Cin Kofin Duniya ta 2003 kuma na shida a Wasannin Olympics na 2004 da Gasar Cin Kofin Duniya ta 2005