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 / 51.08944; 2.54528 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 / 49.54611; 5.81806 near Athus and Mont-Saint-Martin). The straight distance between these points is 289 km (180 mi).

Since 1995 Belgium and France have been parts of the Schengen Area. This means there are no permanent border controls at this border, but there have been temporary controls.