Rennes-les-Bains (Occitan: Les Banhs de Rènnas) is a commune in the Aude department in southern France.
Bathers have enjoyed the natural hot spring waters for thousands of years - they are still used today as a cure for rheumatism and certain skin problems. Today, it is a modern thermal spa with the latest equipment.
Rennes-les-Bains is located in the micro-tourist region of Razès in the valley of the River Sals, with its source 5 kilometers away at Sougraigne.
It is 3 km from Rennes-le-Château, 20 km from Limoux, 48 km from Carcassonne, 103 km from Toulouse, 147 km from Montpellier, 253 km from Marseille, 267 km from Barcelona, 315 km from Bordeaux, 409 km from Nice, and 660 km from Paris.