San Martín is near to Cadalso de los Vidrios, Pelayos de la Presa, Villa del Prado, Aldea del Fresno, Navas del Rey y Colmenar del Arroyo, other towns of Comunidad de Madrid, and it is also near the village of Ávila: El Tiemblo, and Pantano de San Juan.

In the summer, San Martín, the population increases due to an influx of non-residents escaping the winter to spend their holidays.

The most well-known entertainers in the town are a music and dance group called "Grupo de Jotas María de la Nueva".

Festivals in San Martín are held between 7–12 September in honour of the Virgin Mary.

This article about a location in the Community of Madrid, Spain is a stub.