Park Record Media Center

The pack rides during the 197.5 km thirteenth stage of the 101st edition of the Tour de France cycling race on July 18, 2014 between Saint-Etienne and Chamrousse, central eastern France. (LIONEL BONAVENTURE/AFP/Getty Images) ( 531739168 )

Children look at the pack riding during the 185.5 km twelfth stage of the 101st edition of the Tour de France cycling race on July 17, 2014 between Bourg-en-Bresse and Saint-Etienne, central eastern France. (LIONEL BONAVENTURE/AFP/Getty Images) ( 531734215 )

Italy's Alessandro De Marchi rides in a breakaway during the 197.5 km thirteenth stage of the 101st edition of the Tour de France cycling race on July 18, 2014 between Saint-Etienne and Chamrousse, central eastern France. (LIONEL BONAVENTURE/AFP/Getty Images) ( 531743394 )

The pack passes at a railroad crossing during the 197.5 km thirteenth stage of the 101st edition of the Tour de France cycling race on July 18, 2014 between Saint-Etienne and Chamrousse, central eastern France. (ERIC FEFERBERG/AFP/Getty Images) ( 531740151 )

(From L) France's Romain Bardet wearing the best young's white jersey, Netherlands' Lieuwe Westra and Italy's Vincenzo Nibali wearing the overall leader's yellow jersey observe a minute of silence for the Malaysia Airlines plane crash, prior to the start of the 197.5 km thirteenth stage of the 101st edition of the Tour de France cycling race on July 18, 2014 between Saint-Etienne and Chamrousse, central eastern France. (ERIC FEFERBERG/AFP/Getty Images) ( 531738037 )

Dieter "Didi" Senft of Germany, known as El Diablo, left, encourages the pack led by Japan's Yukiya Arashiro, right, as it climbs Palaquit pass during the thirteenth stage of the Tour de France cycling race over 197.5 kilometers (122.7 miles) with start in Saint-Etienne and finish in Chamrousse, France, Friday, July 18, 2014. (AP Photo/Christophe Ena) ( Cycling Tour de France )

Italy's Vincenzo Nibali (C) wearing the overall leader's yellow jersey, Austria's Bernhard Eisel (C-L) and Australia's Richie Porte (3rdR) ride in the pack past a sunflowers field during the 197.5 km thirteenth stage of the 101st edition of the Tour de France cycling race on July 18, 2014 between Saint-Etienne and Chamrousse, central eastern France. (LIONEL BONAVENTURE/AFP/Getty Images) ( 531740814 )

The pack rides during the 197.5 km thirteenth stage of the 101st edition of the Tour de France cycling race on July 18, 2014 between Saint-Etienne and Chamrousse, central eastern France. (ERIC FEFERBERG/AFP/Getty Images) ( 531739995 )

Denmark's Jakob Fuglsang grimaces as he tries to catch up with pack after crashing during the thirteenth stage of the Tour de France cycling race over 197.5 kilometers (122.7 miles) with start in Saint-Etienne and finish in Chamrousse, France, Friday, July 18, 2014. (AP Photo/Laurent Cipriani) ( Cycling Tour de France )

Italy's Vincenzo Nibali (5thL) rides in the pack on a bridge behind his Kazakhstan's Astana teammates during the 197.5 km thirteenth stage of the 101st edition of the Tour de France cycling race on July 18, 2014 between Saint-Etienne and Chamrousse, central eastern France. (LIONEL BONAVENTURE/AFP/Getty Images) ( 531739853 )

Germany's Andre Greipel receives medical assistance during the 197.5 km thirteenth stage of the 101st edition of the Tour de France cycling race on July 18, 2014 between Saint-Etienne and Chamrousse, central eastern France. (ERIC FEFERBERG/AFP/Getty Images) ( 531741742 )

Italy's Vincenzo Nibali crosses the finish line to win the thirteenth stage of the Tour de France cycling race over 197.5 kilometers (122.7 miles) with start in Saint-Etienne and finish in Chamrousse, France, Friday, July 18, 2014. (AP Photo/Peter Dejong) ( Cycling Tour de France )

Supporters take a picture with Germany's Marcel Kittel (2ndR) at the departure village in Saint-Etienne prior to the start of the 197.5 km thirteenth stage of the 101st edition of the Tour de France cycling race on July 18, 2014 between Saint-Etienne and Chamrousse, central eastern France. (LIONEL BONAVENTURE/AFP/Getty Images) ( 531742668 )