Explore hiking trails around San Martín del Tesorillo, Andalucía. The best hike near San Martín del Tesorillo is SL-A 138 / SL-A 139 via Sendero del Río Guadiaro, a 12.7 mile oneway in Parque natural de la Sierra de Grazalema. San Martín del Tesorillo has population 2754.0.