Mezue ahịrịokwu na-esonụ: O setịpụrụ ihe ndekọ onwe ya maka Ọkara Marathon nke 1: 13: 03 na
2005 IAAF World Half Marathon Championships na Edmonton, Alberta, Canada. Ihe kacha mma ya na marathon bịara n'oge Nagano Marathon na 2006, na oge nke 2:29:46. Rillstone setịpụrụ ihe ndekọ mba maka marathon na 2007 IAAF World Championships na Osaka, Japan, na oge nke 2:33:58, na-agwụ na nke iri na atọ.