The route runs from R46 junction at Cheglio,one of the three villages of Trarego-Viggiona,through woods and pastures. From the Monti Lemanni, with a short ascent it leads to the meadows at altitude,meets the branches of R38a and S05 and reaches M.Carza.
Datos de la ruta de los colaboradores de OpenStreetMap, con licencia ODbL.