Tour de France

Peter Sagan of Slovakia, wearing the best sprinter's green jersey, left, rides in the pack during the seventeenth stage of the Tour de France cycling race over 161 kilometers (100 miles) with start in Digne-les-Bains and finish in Pra Loup, France, Wednesday, July 22, 2015

Christophe Ena/AP

Peter Sagan of Slovakia, wearing the best sprinter’s green jersey, rides in the pack during the 17th stage of the Tour de France cycling race over 161km (100 miles) with the start in Digne-les-Bains and finish in Pra Loup, France, on Wednesday

The pack of riders cycle during the 11th stage of the Tour de France cycling race...The pack of riders cycle during the 188-km (116.8 miles) 11th stage of the 102nd Tour de France cycling race from Pau to Cauterets in the French Pyrenees mountains, France, July 15, 2015.

Eric Gaillard/Reuters

The pack of riders cycle during the 188-km (116.8 miles) 11th stage of the 102nd Tour de France cycling race from Pau to Cauterets in the French Pyrenees mountains, France, on Wednesday

Belgium Cycling Tour de France

Christophe Ena/AP

Scores of riders lie on the road after crashing during the third stage of the Tour de France cycling race in Belgium on Monday.

Cycling Tour de France

Peter Dejong/AP

Italy’s Michele Scarponi rests in a team car as he waits for the rest of the Astana team with overall leader Italy’s Vincenzo Nibali, to go for a training on the second rest day of the Tour de France cycling race in Lignan-sur-Orb, southern France, on Monday.

The pack of riders cycles on its way during the 197.5km 13th stage of the Tour de France cycling race...The pack of riders cycles on its way during the 197.5km 13th stage of the Tour de France cycling race between Saint-Etienne and Chamrousse, July 18, 2014.         REUTERS/Jacky Naegelen (FRANCE  - Tags: SPORT CYCLING TPX IMAGES OF THE DAY)

Jacky Naegelen/Reuters

The pack of riders cycles on its way during the 197.5km 13th stage of the Tour de France cycling race between Saint-Etienne and Chamrousse

Cycling Tour de France

Christophe Ena/AP

A doctor tends to Spain’s Alberto Contador, as team manager Bjarne Riis of Denmark holds him after he crashed in the tenth stage of the Tour de France cycling race on Monday. Contador abandoned the race later.

Cycling Tour de France

Laurent Cipriani/AP

The peloton passes a field of sunflowers during the seventh stage of the Tour de France cycling race. The 234.5 km stage started in Epernay and finished in Nancy, France 

Belkin team rider Lars Boom of the Netherlands celebrates as he wins the 155.5 km fifth stage of the Tour de France cycling race

Jacky Naegelen/Reuters

Belkin team rider Lars Boom of the Netherlands celebrates as he wins the 155.5 km fifth stage of the Tour de France cycling race from Ypres Belgium to Arenberg Porte du Hainaut on Wednesday

Cycling Tour de France

AP Photo/Christophe Ena

Rain clouds spell trouble for the riders as the peloton heads towards Lille during the Tour de France. The riders set out from Le Touquet for the 163 km fourth stage of the three-week race.

Cycling - Tour de France - Stage Three - Cambridge to London...Race leaders pass the Victoria Memorial and Buckingham Palace as they sprint for the finish. PRESS ASSOCIATION Photo. See PA story CYCLING Tour. Picture date: Monday July 7, 2014. Photo credit should read: David Davies/PA Wire

David Davies/PA

Stage Three of the Tour de France, Cambridge to London, race leaders pass the Victoria Memorial and Buckingham Palace as they sprint for the finish 

The pack climbs towards Glandon pass during the nineteenth stage of the Tour de France cycling race over 204.5 kilometers (127.8 miles) with start in in Bourg-d'Oisans and finish in Le Grand-Bornand, France, Friday July 19 2013. (AP Photo/Laurent Cipriani)

Laurent Cipriani/AP

The pack climbs towards Glandon pass during the nineteenth stage of the Tour de France cycling race over 204.5 km. The stage started in Bourg-d’Oisans and finishes in Le Grand-Bornand, France, on Friday. 

Christopher Froome of Britain, wearing the overall leader's yellow jersey, rides in the pack during the eighteenth stage of the Tour de France cycling race over 172.5 kilometers (107.8 miles) with start in Gap and finish in Alpe-d'Huez, France, Thursday July 18, 2013.

Laurent Cipriani/AP

Christopher Froome of the UK, wearing the overall leader’s yellow jersey, rides in a pack on Thursday during the 18th stage of the Tour de France cycling race which runs for 172.5km starting in Gap and finishing in Alpe-d’Huez, France.

Christopher Froome of Britain, wearing the overall leader's yellow jersey

Laurent Cipriani/AP

Christopher Froome of the UK, wearing the overall leader’s yellow jersey, and Spain’s Alberto Contador, right, speed down the Manse pass on the final stretch of the 168km sixteenth stage of the Tour de France cycling race which started in Vaison-la-Romaine and finished in Gap, France, on Tuesday.

The pack passes fields of wheat near Nouans-les-Fontaines during the thirteenth stage of the Tour de France cycling race over 173 kilometers (108.1 miles) with start in in Tours and finish in Saint-Amand-Montrond, western France, Friday July 12 2013.

Christophe Ena/AP

The peloton passes fields of wheat near Nouans-les-Fontaines during the 13th stage of the Tour de France cycling race over 173km, which starts in Tours and finishes in Saint-Amand-Montrond, western France

Second place Mark Cavendish of Britain, left, and stage winner Marcel Kittel of Germany, right

Laurent Rebours/AP

Mark Cavendish of the UK, left, and Marcel Kittel of Germany, right, sprint towards the finish line of the 12th stage of the Tour de France cycling race in Tours, western France, on Thursday. 

Andrew Talansky of the U.S. passes world heritage site Mont-Saint-Michel

Laurent Cipriani/AP

Andrew Talansky of the US passes Mont Saint-Michel, in Normandy, during the 11th stage of the Tour de France, on Wednesday

Nuns of the Monastere de la Consolation in Draguignan cheer as Simon Gerrans of Australia, wearing the overall leader's yellow jersey, passes during the fifth stage of the Tour de France cycling race over 228.5 kilometers (142.8 miles) with start in Cagnes-sur-Mer and finish in Marseille, southern France, Wednesday July 3, 2013. (AP Photo/Laurent Ciprani)

Laurent Ciprani/AP

Nuns of the Monastere de la Consolation in Draguignan cheer as the yellow jersey rider passes at speed during the fifth stage of the Tour de France cycling race. Cyclists on Wednesday raced over 228.5 km (142.8 miles) from Cagnes-sur-Mer to Marseille in southern France. The worlds biggest bike race ends in Paris on July 21