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).