Lake, northern Italy. Largest of the Italian lakes, it is 34 mi (54 km) long and 2 to 11 mi (3 to 18 km) wide, with a shoreline of 77.5 mi (125 km). It borders Lombardy, Veneto, and Trentino–Alto Adige. Separated from the Adige River valley by the narrow ridge of Mount Baldo, it is fed by the Sarca River at its northern end, while the Mincio flows out toward the Po River to the south. The lake is encircled by the Gardesana scenic route, opened in 1931. Well sheltered by the Alps to the north, Lake Garda has a temperate Mediterranean climate. It is a popular resort area.