Kammala jumla mai zuwa: Kibiwott ya fara yin gasa a kan hanyar da ake gudanarwa ta hanyar Turai a shekara ta 2006 bayan da ya kammala na uku a Eldoret Half Marathon. Ya lashe duka Prague Half Marathon da Turin Marathon a wannan shekarar kuma ya zama na biyu a Alexander the Great Marathon. Bai yi nasara sosai ba a 2007, ya kasa gamawa a London da Prague Marathons, sannan ya gama 28 a Frankfurt Marathon. Ya dawo cikin tsari a cikin 2008 tare da nasara a Rabin Marathon na Paris da wata nasara a Turin. Matsayi na biyu a cikin mafi kyawun minti na 59: 44 a Lille Half Marathon ya tabbatar da zaɓinsa ga Kenya a
2008 IAAF World Half Marathon Championships, inda ya zo na huɗu.