Ka kammala wannan magana: Ta fara yin gasa a shekara ta 2006, sa'ad da ta kafa sa'o'i 1:16:48 a matsayin ta biyu a rabin tseren gudun fanfalaki na Mazatlán kuma ta yi sa'o'i 2:51:32 a tseren gudun fanfalaki na Mexico City. Ta inganta mafi kyawun lokacin marathon na sa'o'i 2:43:21 a shekara mai zuwa kuma ta lashe lambar azurfa a tseren mita 5000 a Gasar NACAC ta 2007 a San Salvador. Romero ta fara fitowa a fagen duniya a gasar tsere ta rabin tsere ta IAAF ta 2009 kuma ta gama a matsayi na 39. A shekara mai zuwa ta yi tseren marathon mafi kyau na awanni 2:42:33 a León, Mexico kafin ta ci gaba da neman lambar zinare ta mata a wannan taron a Wasannin Amurka ta Tsakiya da Caribbean na 2010. Ta gudu rabin marathon mafi kyau na 1: 14:13 hours a
2010 IAAF World Half Marathon Championships a Nanning don gamawa a matsayi na 22 a tseren mata.