MTB XC Route, beginning and ending at the "Polo A - S. Mamede do Centro de Cyclin' de Castelo Vide/Marvão", located in Beirã. High skill level route, that crosses part of the Serra de São Mamede Natural Park, by municipal roads, rural paths, some of them walled on both sides and trails. With a landscape predominantly characterized by the cork oak, holm oak and grazing areas and adjacent to the dam of Póvoa e Meadas. It is a physically demanding route that has almost 100 km, and whose main crossing points are Marvão, Portagem, Serra de Porto Espada, Albufeira da Barragem da Apartadura, Careers, Castelo de Vida, Póvoa e Meadas Dam, Póvoa e Meadas, Menir da Meada, among other places. This route also coincides with other routes from the entrance to Beirã of the Cycling Center of Castelo de Vide / Marvão, as well as routes from the entrance to Castelo de Vide and the Póvoa e Meadas Dam.