Trekking in the Sierra de Guadarrama - Atalaya Torrepedrera (Torrelaguna)

The Sierra de Guadarrama, north of the capital city Madrid, is part of Spain's Central Mountain System. The highest point is Peñalara, standing at 2,428 metres (7,966 ft) above sea level. This is a collection of walks that reveals the diverse nature of this range of mouintains, partly within a National Park, sometimes climbing to the highest peaks, sometimes meandering through the villages and valleys. Most routes are circular and many can be reached with public transport.

Technical sheet
No. 18371686
A Torrelaguna walk posted on 09/01/22 by El Sud. Update : 14/01/22
Calculated time Calculated time: 6h00[?]
Distance Distance : 10.53mi
Vertical gain Vertical gain : 1322ft
Vertical drop Vertical drop : 1332ft
Highest point Highest point : 3360ft
Lowest point Lowest point : 2408ft
Moderate Difficulty : Moderate
Back to starting point Back to starting point : Yes
Walking Walking
Location Location : Torrelaguna
Starting point Starting point : N 40.825843° / W 3.540678°
Download : -
The Tomillares Reservoir The Atalaya Torrepedrera


(D) Start from the Public Car Park in Torrelaguna (C/ Marqués de Torrelaguna). Turn left along Paseo de la Varguilla and through the archway. Turn right into Traversía La Plaza and right again into the cul-de-sac of the C/ Juan de Gamarra to see the Portada de los Quiros. Return to the Traversía La Plaza and turn right to enter the Plaza Mayor where you will find the Town Hall and the church dedicated to Santa María Magdalena.

(1) Moving on, to the right of the church along the C/ Cardenal Cisneros and C/ Montera our route passes the Casa Solariegos in the picturesque Plaza Montero. Heading down some steps to the stream Arroyo Matachivos, we pass a tower on the left, Torre de la Montera. The Torrelaguna wall is now in quite a bad state.

(2) Turn left along the stream (most of the year dry, as the main flow of water is channeled underneath the cement) to reach the curved bridge Puente Marichivas. Crossing the bridge, bear left along C/ Opranilla to reach the Fuente Gorda. Take the slope that rises behind the fountain, along C/ Juan del Campo then right along C/ Real de los Merinos to reach the Fuente de los Merinos. Turn left to go along the Salida de San Andrés with the high wall on the left. Follow this street, ignoring all exits to the right and cross straight over the C/ del Canal Isabell II, continuing out of the village along C/ del Montero. The track bears right and carries on for some time through cultivated fields with olive trees and a whole collection of wild plants, including rosemary, lavender, thyme, olive and almond trees, rock rose, and esparto. Don't be drawn down to the main road but keep more or less parallel with it until reaching an obvious track with grey stone covering, one of many service roads for the Canal Isabel II infrastructure. Torrelaguna and this whole area is marked by the various reservoirs, pipes, pumps, and siphons that have been constructed over the centuries to supply drinking water to Madrid.

(3) Go down the service track for about 100m to reach a T-junction and turn left. The track goes across a bridge over the Arroyo de San Román but our route bears left then drops down to go along the (usually) dry stream, heading into the gorge. The route follows the stream into the limestone surroundings. The path passes under an aqueduct and then goes under a siphon that carries large water pipes. There are a number of constructions, some now derelict, others carrying Madrid's water. At about this point, the geography changes and we begin to see some slate and the stream is now above ground. A little further on our route crosses the GR-10.1 but keeps following the stream, this is the beginning the Senda San Román. Our path twists and winds with the stream, constantly crossing and recrossing the flow of water but without too much difficulty. After about 3km the route reaches the small Tomillares Reservoir , where it crosses the small dam, only wetting our boots a little.

(4) From here, there is a steep climb up towards the road (M-133) but just before reaching the tarmac, take a path off to the left that goes behind a number of bee-hives. This path then drops down to the left next to an old wire fence until a gap opens up on the right and allows us to descend to another small stream. Then it's back up the other side on a zig-zagging path to reach the stream Reguero del Tinado. Cross this and also the next stream Arroyo de las Tejeras. Logic suggests (and tired legs implore) that we head over to the Atalaya by a path that joins a dirt track further up the hill. However, our route descends slightly to reach the stream Vallejo Ancho where the route bears right to go up by the stream to reach the Fuente Atalaya. Follow the path, well-trodden by the cows and other livestock, to reach a dirt track and a short climb up to the Atalaya Torrepedrera.

(5) Once the Atalaya has been inspected (access by a metal ladder allows visitors to enjoy the views from the top) and the vistas over the largest reservoir in the district, the Embalse Atazar, that traps the waters of the Lozoya River, our route returns to a southerly direction, going right along the dirt track crossed earlier. Look out for the Fuente Pedro Arias on the right just off the track, before reaching a metal gate that leads out onto a road at a small roundabout. This is the entrance to a housing estate known as Los Tomillares.

(6) Turn left and climb up the steep road that runs parallel with the border between Torremocha (the housing estate is in that part) and Torrelaguna. Then straight on, to go down past a house and continue along a dirt track to reach the valley floor. Here, turn right to follow the stream with a pine forest on the left. Keep straight on as the main track swings left up the hill. Stay left of the stream, on the Senda Arroyo, for about 1km to pass an old well or water intake access point. Just a bit further on, the path crosses the stream and follows a concelled canal or irrigation ditch. Keep bearing left with the stream to see Torrelaguna down in the distance. The path comes out onto a dirt track that leads to the bottom of the valley. Take the track that leads diagonally up to the left to reach the old road between Torrelaguna and El Berrueco. This goes past the Canal Isabel II large pipes coming down from the east and shooting up to the west, then reaches the aqueduct Matachivas.

(7) Don't join the road but head down by the side of the stream to reach the first houses of Torrelaguna. Shortly, on the left, go past the hermitage dedicated to San Esteban (or San Sebastian) and carry straight on along the C/ San Sebastian into the village. Just before reaching the Puente Marichivas, turn right into C/ de la Redondilla until the Post Office (Correos) comes into view. Bear left along C/ Almendro to see the Pino Centenario (100+ years old pine tree). Continue on up the C/ Pino Centenario to reach the Plaza del Poeta Juan de Mena. Carry straight on to reach the Plaza Mayor once more. Bear left, past the Bar La Plaza to go along C/ del Cardenal Cisneros to the crossroads and the old Casa Patata. On the opposite corner is the Palacio Arteaga. Turn right then left to enter the C/ de la Marquesa de Torrelaguna and back to the Public Car Park.(A)

Waypoints :
D/A : mi 0 - alt. 2428ft - Public Car Park Torrelaguna
1 : mi 0.27 - alt. 2431ft - Plaza Mayor Torrelaguna
2 : mi 0.37 - alt. 2408ft - Tower de la Montera
3 : mi 2.52 - alt. 2487ft - Canal Isabel II service road
4 : mi 4.62 - alt. 2864ft - Tomillares Reservoir
5 : mi 6.25 - alt. 3353ft - Atalaya Torrepedrera
6 : mi 7.2 - alt. 3274ft - Los Tomillares housing estate
7 : mi 9.53 - alt. 2635ft - Matachivas aquaduct
D/A : mi 10.53 - alt. 2425ft - Public Car Park Torrelaguna

Useful Information

Early morning churros and porras are available in El Fary (P.º de la Varguilla, 2). Good strong and comfortable boots are essential and waterproofs are always recommended. Food and water for the journey will be needed but don't leave anything behind apart from your footprints. Don't take anything away with you apart from photos and good memories.

Visorando and this author cannot be held responsible in the case of accidents or problems occuring on this walk.

During the walk or to do/see around

Portada de los Quiros : This Gothic façade of the fifteenth century gave way to the courtyard belonging to the house of Bernaldo de Quirós, it is the only element that is preserved of the house, thought to have been a great palace, unfortunately no longer standing.

The church dedicated to Santa María Magdalena is one of the best examples of Madrid's gothic architecture, although its decoration mixes Gothic and Renaissance elements, something usual in Hispanic constructions of the time. Its construction ranges from the first years of the 15th century to the first quarter of the 17th century. With a basilica plan with three naves, it has five chapels on the sides. The altarpieces are baroque and plateresque. Among them, the main altar, of the Churrigueresque type, stands out, attributed to Narciso Tomé.

Casa Solariegos in the picturesque Plaza Montero : You can see good examples of civil architecture, two beautiful manor houses were built in the seventeenth and eighteenth centuries, made in a typically Castilian style, based on brick and stone. Even today, they maintain all their splendor and preserve their interior caves-cellars, very frequent in the houses of the historic center of Torrelaguna.

A picture from 1629 still shows us the entire enclosure of The Torrelaguna wall. A great social difference was established by the fact of living inside or outside the walls. The wall had small doors and shutters for the free movement of carriages and merchandise, some of them of great importance such as this Tower de la Montera.

The Atalaya was built at some time between the 9th and 10th centuries. It was part of a system of watchtowers, erected by the Muslims at different points in the Sierra de Guadarrama, whose function was to monitor the main Islamic valleys and communication routes, against possible Christian incursions.

Torrelaguna, the Canal Isabel II infrastructure and the Atalaya Torrepedrera all have stories about their past worth investigating. There are some hints in the route description but it is recommended that walkers find out about the history of the area before doing the route as the real-time experience will be so much more enjoyable. This is a pleasant walk with some ups and downs but mainly it's following the stream San Román with a number of crossings that might get complicated if the water levels are high (very seldom). The obvious eating spot is when you get to the Atalaya Torrepedrera but stopping to appreciate the surroundings and eat some fruit is also a good idea every so often. Take care of yourself and look out for wildlife along the way. Just enjoy the journey and make the most of the moment.

The GPS track and description are the property of the author.