You can find this route on the BikeSquare app with code E17
The southern Francigena from Rome to Velletri.
It is a very exciting journey, full of mysteries and charm. It winds its way from Rome through the queen of streets, the ancient Appia, through Ciampino, Santa Maria delle Mole and Marino. From there you start to climb towards the Roman castles passing through the ancient path that ran along the Appian Way, you arrive at Castel Gandolfo admiring the lake of Albano, cross the town and immerse yourself in the woods reaching the splendid town of Nemi. We then continue to the Vivaro through the woods descending to the glorious city of Velletri. From here you can return directly by train or, why not, with the e-bike.