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 chepasi rose pa2009 IAAF World Half Marathon Championships uye akapedza ari pachinzvimbo che39. 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 yemarathoni yakanakisisa yamaawa 1:14:13 pa
2010 IAAF World Half Marathon Championships muNanning kuti apedze ari pachinzvimbo chechi22 mumakwikwi evakadzi.