Circular route of pure marathon rally, ideal for lovers of track routes, which goes into the heart of the Sierra de Armantes. A place dominated by an extensive mass of pine forest and deep ravines. The route visits one of the essential points of this mountain range: the Collado de los Castillos, with spectacular views of the sandstone formations of the well-known Far West in Bilbao. The return to Calatayud is made through areas of pine forest and then plaster steppes, so characteristic of this territory.
