Île de Ré is an island off the Atlantic coast of France near La Rochelle, Charente-Maritime, on the northern side of the Pertuis d'Antioche strait. Its highest point has an elevation of 20 metres. It is 30 kilometres long and five kilometres wide. The 2.9 km (1.8 mi) Île de Ré bridge, completed in 1988, connects it to La Rochelle on the mainland.

La Rochelle is a city on the west coast of France and a seaport on the Bay of Biscay, a part of the Atlantic Ocean. It is the capital of the Charente-Maritime department. With 78,535 inhabitants in 2021, La Rochelle is the most populated commune in the department and ranks fourth in the Nouvelle-Aquitaine region after Bordeaux, the regional capital, Limoges and Poitiers.