Although Fernández specializes in the 1500 m, she has achieved significant success in cross country events. She won bronze medals representing Spain in the team competition at both the 2009 European Cross Country Championships held in Dublin (Ireland) and the 2010 European Cross Country Championships held in Albufeira (Portugal). She followed this with a win at the Cross Internacional de San Sebastián in January 2011, and a victory at the Spanish Cross Country Championships in February 2011.