The Roman Road consists of two very different sections.
The first stretch lies in the municipality of Castellfollit de la Roca and follows what are thought to be the remains of the Roman road that passed through Besalú. No further traces are found until the Bianya Valley, where a second stretch links Sant Salvador de Bianya and Sant Pau de Segúries via the pass of Capsacosta, in all 6.2 km of Roman road and a climb of 420 m. This section of Roman road branched off the great Via Augusta and headed inland and then breached the Pyrenees, probably at Coll d’Ares.
