Explore hiking trails around Riofrío de Riaza, Castilla-La Mancha. The best hike near Riofrío de Riaza is Collado de Cerromalejo Loop via Pista forestal de la Calle Alta, a 6.0 mile loop in Parque Natural de la Sierra de Guadarrama Norte. Riofrío de Riaza has population 27.0.