German rider Marcel Kittel won the first stage of the 100th Tour de France in a sprint finish with Alexander Kristoff on Saturday.
Former champion Alberto Contador was involved in a crash near to the end of the flat, 132-mile stage.
Sprinter Peter Sagan was also among those hitting the ground.
They were able to continue, with Contador's shoulder cut and bruised.
British sprinter Mark Cavendish appeared to be affected by the crash and was not among the stage challengers at the end.
Organizers considered shortening the stage by two miles because a bus from the Orica Greenedge team was stuck on the finish line.
But they managed to move it and the normal finishing spot was reinstated.