Barra de Navidad is generally a secure destination for solo female travelers. It is a small, peaceful coastal town where locals are friendly and welcoming. Though it's generally safe, like any destination, it is important to exercise common precautions. Use taxis from reputable companies, especially at night, and avoid isolated areas. Stay aware of your surroundings, take care of your belongings, and it's generally advisable to stay within areas frequented by tourists.