Pedzisa mutsara unotevera: Makwikwi ake okutanga akauya muna 2006, paakava wechipiri pakumhanya hafu yemarathoni muMazatlán uye akawana maawa 1:16:48 uye 2:51:32 paMexico City Marathon. Akavandudza nguva yake yakanakisisa yemarathon ye2: 43: maawa 21 gore rakatevera uye akakunda menduru yesirivha mu5000 m pa2007 NACAC Championships muSan Salvador. Romero akaita kutanga kwake pachikuva chenyika yose pa
2009 IAAF World Half Marathon Championships uye akapedza ari pachinzvimbo 39. Gore rakatevera iye akamhanya marathon yakanakisisa ye2: 42: 33 maawa muLeón, Mexico asati aenda kunotora menduru yegoridhe yevakadzi mumutambo uyu pa2010 Central American neCaribbean Games. Akamhanya hafu yemarathon yakanakisisa ye1:14: 13 maawa pa2010 IAAF World Half Marathon Championships muNanning kuti apedze munzvimbo ye22 mumakwikwi evakadzi.