Mezue nkebi ahịrịokwu a: Ọ malitere ịgba ọsọ n'afọ 2006, mgbe o ji otu awa na nkeji iri na isii na nkeji iri anọ na asatọ gbaa ọsọ nke abụọ n'ọsọ ọkara marathon e mere na Mazatlán, o jikwa awa abụọ na nkeji iri ise na otu na nkeji iri atọ na abụọ gbaa ọsọ nke abụọ n'ọsọ Mexico City. O meziwanye oge marathon ya kachasị mma nke awa 2: 43:21 n'afọ na-esote ma merie ọla ọcha na 5000 m na 2007 NACAC Championship na San Salvador. Romero mere ihe mbụ ya n'ụwa niile na 2009 IAAF World Half Marathon Championships wee mechaa n'ọnọdụ 39. N'afọ sochirinụ, ọ gbara ọsọ marathon nke kachasị mma nke 2:42:33 awa na León, Mexico tupu ịga n'ihu na-ekwu na ọ bụ ọla edo ụmụ nwanyị na ihe omume ahụ na 2010 Central American na Caribbean Games. Ọ gbara ọsọ ọkara marathon nke kachasị mma nke 1:14:13 awa na
2010 IAAF World Half Marathon Championships na Nanning iji wuchaa na 22nd ebe na agbụrụ ụmụ nwanyị.