Mezue ahịrịokwu na-esonụ: Ọ gbara asọmpi na World Cross Country Championships na 1997, 1999 na 2000 n'enweghi ihe ịga nke ọma. Otu n'ime marathons mbụ ya mere na 2002 European Championships, ebe ọ kwụsịrị 32nd. N'afọ 2004, ọ gbara nke iri na abụọ na 2004 World Half Marathon Championships na nke iri abụọ na 2004 Olympic Games. N'afọ 2005, ọ gbara nke iri abụọ na isii na 2005 World Half Marathon Championships, na nke iri abụọ na otu na 2005 World Championships. Ọ gbara onye nke iri na asatọ na 2006 European Championships, onye nke iri na itoolu na 2007 World Championships na onye nke iri isii na isii na
Egwuregwu Olimpik nke 2008.