The ancient railways built in Las Vegas madrileñas between the 19th and 20th centuries to connect the region with the capital, simultaneously allowing the export of industrial and agricultural products, are now converted into pleasant and comfortable bike lanes and greenways perfect for cycling routes of different levels and content. An interesting route starts from the municipality of Tielmes, of Roman origin with interesting medieval heritage, and runs along a stretch of the Greenway of Tajuña to Carabaña. It then continues along the first section adapted from the Train of the 40 Days, to the village of Valdaracete. The route departs from the stone bridge of Tajuña and at the intersection of the hermitage of San Isidro begins a rural path that ascends to the viewpoint of the bench “Tielmes is heart,” with an extraordinary panoramic view of the urban ensemble on the hillside of the valley. The Greenway passes through the welcoming site of the hermitage of the Santos Niños and at the municipal boundary is the entrance to the Azud de Vaciabotas, known as the “waterfall” of Tajuña.

The streets of Carabaña are outside the route, on the other side of the Tajuña River, it is one of the oldest populations in the Community of Madrid and to enter you must cross the Tajuña bridge, of Roman origin and reconstructed in the 18th century. The cycling itinerary crosses the road of Estremera and connects with the layout of the Train of the 40 Days, which is also adapted as a Greenway between Carabaña and Estremera. The Train of the 40 Days or Vía Negrín was built in a hurry during the Civil War to supply the Republican troops fighting in Madrid.