Frenchman Tony Gallopin quit the Tour de France during the race\'s 13th stage, organisers announced on Saturday. Gallopin, who rides for the RadioShack team, had been suffering from stomach problems in recent days and pulled out inside the first 50 km of the 217 km ride from Saint-Paul-les-Trois-Chateaux to Cap d\'Agde. The 24-year-old had been hoping to aim for a stage win in the Pyrenees on his debut Tour de France.