GTA – Fondo to San Lorenzo 2026-01-25Videos GTA - Fondo to San LorenzoThis video is hosted on YouTube. It is only loaded after you click play — the connection to YouTube is established at that moment.Watch on YouTube ↗ We continued on what is probably the most difficult European hiking route, the Grande Traversata delle Alpi from Fondo to San Lorenzo. The route from Pont Saint Martin took us 5 days to reach San Lorenzo.