Colmenarejo is a Spanish town and municipality in the Community of Madrid, located in the northwest of the region, in the foothills of the Sierra de Guadarrama, 899 meters high and 37 kilometers away from the capital. It is bordered to the north by El Escorial, to the east by Galapagar, to the south by Villanueva del Pardillo and to the west by Valdemorillo. Its only road access is the M 510, from Galapagar or from Valdemorillo. It has in its municipality with the east bank of the reservoir of Valmayor, second in capacity of the Region of Madrid, with the third Campus of the University Carlos III of Madrid and with an attractive natural environment, where you can go for walks with a bicycle, within the Regional Park of the middle course of the Guadarrama River and its surroundings, in which stand out the holm oaks and pastures of cattle use dotted with junipers, ash trees and gall oaks.

Villanueva del Pardillo is a municipality and Spanish town of the Community of Madrid, situated 26 kilometers from the capital of Spain and nestled in the natural environment of the Cuenca del Guadarrama. It borders the municipalities of Majadahonda, Las Rozas de Madrid, Villanueva de la Cañada, Galapagar, Colmenarejo and Valdemorillo.