Kammala jumla mai zuwa: Ta kammala na bakwai a mita 3000 a Gasar Zakarun Duniya ta 2002 kuma ta lashe lambar azurfa a tseren matasa a Gasar Zakarun Duniya ta 2003. A cikin
Gasar tseren tsere ta duniya ta 2004 ta kammala a matsayi na bakwai a cikin gajeren tsere, yayin da kungiyar Kenya, wacce Jepchumba ta kasance wani bangare, ta lashe lambar azurfa a gasar kungiyar.