"Via Francigena" includes a network of possible routes that in the Middle Ages gave the opportunity to the pilgrims coming from north-western Europe (France, British Isles, Flanders) to reach Rome. It is a "network of routes" because there was not one only fixed itinerary, but many alternative routes varying, over the years, according to the needs and the origins of the pilgrims and to the practicability of the trails (for the Middle Ages, it is not possible to talk about roads as in the Roman period, since in the Middle Ages there were no authorities in charge of the maintenance of the tracks, which were created thanks to passage of people).
Further information (Italian text)