Narbonne is a commune in southern France in the Languedoc-Roussillon region. It lies 84a9 km (528 mi) from Paris in the Aude department, of which it is a sub-prefecture. Once a prosperous port, it is now located about 15 km (9.3 mi) from the shores of the Mediterranean Sea. It is marginally the largest commune in Aude, although the capital is the slightly smaller commune of Carcassonne