A guidebook to trekking the Grande Traversata delle Alpi (GTA) from the Nufenen Pass on the Swiss border to Ventimiglia on the Mediterranean coast. Covering 809km (503 miles), this often overlooked long-distance trek through the western Italian Alps takes around 1 month to hike and is suitable for experienced alpine trekkers. The route is described from north to south in 55 stages, each between 7 and 26km (4-16 miles) in length. The route is divided into 3 sections with transport options given for those wanting to break the trek into shorter sections. GPX files available to download 1:100,000 maps included for each stage Handy route summary tables help you plan your itinerary Refreshment and accommodation information given for each trek stage