Wikiloc Ruta por el bosque de Riofrío: https://es.wikiloc.com/rutas-senderismo/palacio-de-riofrio-paseo-por-la-senda-del-mirador-17746480
Vilage. Link Wikiloc: https://es.wikiloc.com/rutas-senderismo/la-pradera-de-navalhorno-valsain-82283299
Cruz de la Gallega. Link Wikiloc: https://es.wikiloc.com/rutas-senderismo/cruz-de-la-gallega-84628372
1. We leave La Hilaria, cross the Ctra. De Madrid through the pedestrian crossing and just in front we have a downward path that will take us straight to the bridge over the Eresma river.
2. Bridge over the Eresma river. (The Wikiloc route begins here). We went up Robledo Street to an intersection about 750 meters from the bridge.
3. At the intersection we take a paved track to the left.
4. About 700 meters further, we take a dirt road to the left heading towards the town again.
5. We came to a small ruined church. At this point we deviate a bit along Calle del Palacio until we find an esplanade with an old granite door, an entrance to the palace.
6. From inside you can see the ruins of the Valsaín palace, with some of its towers still standing. We go back and skirt the facade of the palace, or what remains of it. We pass under a house, where you can see one of the towers currently used as a house.
7. We turn left following C / Palacio until we reach the bridge again, we cross it and then we turn right through Barrio Nuevo, where we will find the new church. We continue bordering until we reach the Madrid Ctra. That we will take (carefully) until we reach La Hilaria.