1 of 12: The Comunidad de Madrid, showing the location of La Pedriza and Manzanares El Real.

2 of 12: The roads that lead to La Pedriza and the most frequent trailhead, Canto Cochino.

3 of 12: Camino de los Cumbres, a very ambitious linear hike. Count on 7-8 hours and transport at both ends.

4 of 12: Canto Cochino-Collado de la Romera: 10 km and 5 hours.

5 of 12: Canto Cochino-Collado de la Ventana: 13 km. and 6 hours.

6 of 12: Canto Cochino-Collado Dehesilla-El Yelmo: 11 km and 5 hours.

7 of 12: Canto Cochino-Col. Dehesilla- El Yelmo North Face: 11 km and 5 hours.

8 of 12: Canto Cochino-Collado del Cabrón: 7 km and 3 hours.

9 of 12: Canto Cochino-Collado del Miradero: 16 km and 6 hours.

10 of 12: Camino de los Bosques- A Walk in the Woods: 11 km. and 4 hours.

11 of 12: Puente de los Poyos- A Natural Rock Bridge: 12 km. and 5 hours.

12 of 12: The Vuelta de Pedriza Posterior. 18 km. and at least 8 hours!