Mezue ahịrịokwu na-esonụ: Na 2008 U.S. Olympic Trials, Culley bịara nke asaa na 5000 m, na oge nke 15:34.43. Ọ bụ onye mbụ si mba Amerịka rụchara ya n'asọmpi ahụ.
2009 World Cross Country Championships, na-emecha 21st na oge nke 28:08.