Plage de Bonne Source, Public beach in Pornichet, France

Bonne Source Beach stretches along the Atlantic coast with fine sand and overlooks nearby islands including La Pierre Percée and Baguenaud. Two lifeguard stations serve the area, along with showers, parking spaces, and facilities designed for people with reduced mobility.

Bonne-Source is one of Pornichet's three sand beaches, with Les Libraires and Sainte-Marguerite. It runs 2.5 km from the pointe du Bec, just south-east of Pornichet harbour, to the pointe de Congrigoux, which separates it from Sainte-Marguerite beach. Les Libraires lies to its west.

The beach's name, Bonne-Source ("good spring"), refers to a freshwater source near the sand. It is one of three sandy beaches in Pornichet, alongside Les Libraires to the west and Sainte-Marguerite to the east, and locals distinguish them by these names in everyday use.

Bonne-Source runs 2.5 km between the pointe du Bec, just south-east of Pornichet harbour, and the pointe de Congrigoux, which separates it from Sainte-Marguerite beach. The neighbouring beaches are Les Libraires to the west and Sainte-Marguerite to the east. At the waterline a low flat rock outcrop sits in shallow water, with pebbles and shell fragments along the edge.

Bonne Source Beach runs 2.5 km between Pointe du Bec, just southeast of Pornichet harbour, and Pointe de Congrigoux, which separates it from Sainte-Marguerite beach. It is one of Pornichet's three sand beaches, alongside Les Libraires to the west and Sainte-Marguerite to the east.