Le Passage de Gois is a natural, periodically flooded passage leading to the island of Noirmoutier in France.
It is located between Île de Noirmoutier and Beauvoir-sur-Mer, in the department of Vendée.
It is flooded twice a day by the high tide.

Every year, a foot race the Foulées du Gois is held across it, starting at the onset of the high tide.

Tour de France
In 1999 Passage du Gois was used by Tour de France bicycle race during Stage 2.
It proved to be decisive for the race after a fall took place because of its slippery surface.
The crash created a six minute split in the peloton which ended the hopes of many favourites to win the race,
like Alex Zülle, who would eventually finish second overall, seven minutes after Lance Armstrong.
In July 2011 The Tour de France will be started here again!