10 BTT routes, with free access, marked and with different degrees of difficulty, that run on the territory of Andorra-Sierra de Arcos and Bajo Martín Comarcas. They arecircular routes, with start and finish in the town. In total, more than 350 km at your disposal. Four of these routes, at some time,cross A-1702: 1, 2, 3 and 10.
More information (Spanish): http://www.turismoandorrasierradearcos.com/ruta_espacio_btt.ph