The route of the Calzada Romana de Caoru is divided into three main sections.

1. Arenas de Cabrales-Invernales de Portudera.
2. Winter Portudera - Collau Posadoriu
3. Collau Posadoriu - Tielve

Stretch 1 between Arenas de Cabrales and Invernales de Portudera climbs steadily up 780 meters in less than 5 km. To do this we climb along a normally well-marked, cobblestone road.