It begins in the west on the Bay of Biscay at the French city of Hendaye and the Spanish city of Irun (43°22′32″N 01°47′31″W﻿ / ﻿43.37556°N 1.79194°W﻿ / 43.37556; -1.79194). The border continues eastward along the Pyrenees to Andorra (42°36′13″N 1°26′30″E﻿ / ﻿42.60361°N 1.44167°E﻿ / 42.60361; 1.44167). At this point, the small country interrupts the border between Spain and France for 63.7 kilometres (39.6 mi) on the Spanish side and 56 kilometres (35 mi) on the French side.