Ku dhameystir weedha soo socota: Tartankeedii ugu horreeyay wuxuu ahaa 2006, markii ay ku guuleysatay orodka Mazatlán oo ahayd 1:16:48 saacadood waxayna ku guuleysatay orodka Mexico City oo ahayd 2:51:32 saacadood. Waxay hagaajisay waqtigeedii ugu fiicnaa ee marathon-ka oo ahayd 2:43:21 saacadood sanadkii xigay waxayna ku guuleysatay billaddii lacagta ahayd ee 5000 m ee 2007 NACAC Championships ee San Salvador. Romero waxay markii ugu horeysay ka soo muuqatay masraxa caalamiga ah
2009 IAAF World Half Marathon Championships oo ku dhammeystay kaalinta 39aad. Sannadkii xigay waxay marathon ku orodday 2:42:33 saacadood León, Mexico ka hor inta aysan ku guuleysan bilada dahabka dumarka ee dhacdada Ciyaaraha Bartamaha Ameerika iyo Kariibiyaanka 2010. Waxay ku orodday nus marathon ugu fiican 1:14:13 saacadood ee 2010 IAAF World Half Marathon Championships ee Nanning si ay ugu dhammayso kaalinta 22aad ee tartanka haweenka.