On stage eleven, Sagan forced a move in the final with his teammate Maciej Bodnar, who were followed by Froome and his teammate Geraint Thomas. They opened up a lead of over twenty seconds and held it to six seconds at the finish, where Sagan beat Froome in a sprint. A successful breakaway saw De Gendt win stage twelve at the finish at Chalet Reynard, which was changed from the intended summit finish at Mont Ventoux, later, due to dangerous winds. In the chasing group of overall favourites, a leading group of Porte, Froome and Bauke Mollema (Trek-Segafredo) crashed into the back of a camera motorbike that was stopped by the encroaching spectators. Froome's bike was unrideable and he was forced to run until he was given a bike from a neutral service car; although it did not fit him he managed to ride until he received his team bike. The race jury gave Froome and Porte the same time as Mollema, who later criticised the jury's decision, suggesting that they would have acted differently if he was the one to go down. De Gendt took the lead of the mountains classification. Stage thirteen's individual time trial was won by Dumoulin, 1:03 ahead of Froome, who extended his lead over his nearest rival (Mollema) to one minute and forty-seven seconds. Cavendish won his fourth stage the next day with a bunch sprint at the Parc des Oiseaux.