From Cannobio (Casali Bagnara) you go up to Piatè, you pass near a little lake and the source of Acqua Minerale. Subsequently to the Masarecci huts and the Pro Redond farm to then exit on the ridge at the crossroads with R40 for Monte Carza.
Datos de la ruta de los colaboradores de OpenStreetMap, con licencia ODbL.