It extends over 700 kilometers, from León, where it is born, to Badajoz. It starts very close to the capital of León and, before crossing the Duero river near Tordesillas, cross the moors of Valencia de Don Juan and Sahagún to reach Medina de Rioseco. Once he leaves the land of Medina del Campo, he goes to La Moraña, in the province of Ávila, and from Muñico to the port of Villatoro. This ravine crosses the Central System through the Sierra de Gredos and from the Valley of Tiétar goes down to Cáceres. Abandoned and to the lands of Castilla y León, dies in the town of Segura de León. This ancient road crosses the Cañada Real Occidental Soriana in the Venta del Hambre at the height of Gallegos de Altamiro.