Belgium–France border

The Belgium–France border or, more commonly, the Franco-Belgian border, separates France and Belgium and is 620 km (390 mi) long. Part of it is defined by the Lys river. The western end is at the North Sea (51°5′22″N 2°32′43″E / 51.08944°N 2.54528°E near De Panne and Bray-Dunes). The eastern end is at the Belgium–France–Luxembourg tripoint (at 49°32′46″N 5°49′5″E / 49.54611°N 5.81806°E near Athus and Mont-Saint-Martin). The straight distance between these points is 289 km (180 mi).

Belgium–France border

The Belgium–France border or, more commonly, the Franco-Belgian border, separates France and Belgium and is 620 km (390 mi) long. Part of it is defined by the Lys river. The western end is at the North Sea (51°5′22″N 2°32′43″E / 51.08944°N 2.54528°E near De Panne and Bray-Dunes). The eastern end is at the Belgium–France–Luxembourg tripoint (at 49°32′46″N 5°49′5″E / 49.54611°N 5.81806°E near Athus and Mont-Saint-Martin). The straight distance between these points is 289 km (180 mi).