Italy–Switzerland border

The border between the modern states of Switzerland and Italy extends for 744 kilometres (462 mi), from the French-Swiss-Italian tripoint at Mont Dolent in the west to the Austrian-Swiss-Italian tripoint near Piz Lad in the east. Much of the border runs across the High Alps, rising above 4,600 metres (15,100 ft) as it passes east of Dufourspitze, but it also descends to the lowest point in Switzerland as it passes Lago Maggiore at below 200 metres (660 ft).

It is the longest border of both Italy and of Switzerland.