The Grande Traversata delle Alpi (GTA) is a long-distance hiking trail in the Italian region of Piedmont. In about 1,000 kilometres (620 mi) and 55 day hikes, it runs through the arc formed by the western Alps from the Pennine Alps through the Graian and Cottian Alps to the Maritime and Ligurian Alps. There are a number of transverse valleys along the route. Day hikes typically connect high-lying valley communities with each other via historic pass routes.