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Britain's Christopher Froome celebrates as he crosses the finish line at the end of the 195 km eighth stage of the 100th edition of the Tour de France cycling race on July 6, 2013 between Castres and Ax 3 Domaines, southwestern France. JEFF PACHOUD/AFP/Getty Images ( 521180197 )

Daryl Impey of South Africa, wearing the overall leader's yellow jersey, signs autographs prior to the start of stage eight of the Tour de France cycling race over 195 kilometers (122 miles) with start in Castres and finish in Ax 3 Domaines, Pyrenees region, France, Saturday July 6 2013. (AP Photo/Christophe Ena) ( Cycling Tour de France )

AX 3 DOMAINES, FRANCE - JULY 06: Cycling fans pose for a photograph wearing costumes during stage eight of the 2013 Tour de France, a 195KM road stage from Castres to Ax 3 Domaines, on July 6, 2013 in Ax 3 Domaines, France. (Photo by Doug Pensinger/Getty Images) ( 173067206 )

The pack with Spain's Alberto Contador, right in dark blue and yellow jersey rides on a tree-lined road during stage eight of the Tour de France cycling race over 195 kilometers (122 miles) with start in Castres and finish in Ax 3 Domaines, Pyrenees region, France, Saturday July 6 2013. (AP Photo/Christophe Ena) ( Cycling Tour de France )

The pack of riders cycles past a vineyard during the 195 km eight stage of the centenary Tour de France cycling race from Castres to Ax 3 Domaines July 6, 2013. REUTERS/Eric Gaillard ( CYCLING-TOUR/ )

(From L) France's Jean Marc Marino, France's Christophe Riblon, and Netherlands' Johnny Hoogerland ride in the breakaway during the 195 km eighth stage of the 100th edition of the Tour de France cycling race on July 6, 2013 between Castres and Ax 3 Domaines, southwestern France. PASCAL GUYOT/AFP/Getty Images ( 521177931 )

The pack rides on a tree-lined road during stage eight of the Tour de France cycling race over 195 kilometers (122 miles) with start in Castres and finish in Ax 3 Domaines, Pyrenees region, France, Saturday July 6 2013. (AP Photo/Laurent Cipriani) ( Cycling Tour de France )

The pack climbs towards Pailheres pass during the eight stage of the Tour de France cycling race over 195 kilometers (122 miles) with start in Castres and finish in Ax 3 Domaines, Pyrenees region, France, Saturday July 6 2013. (AP Photo/Laurent Cipriani) ( Cycling Tour de France )

Team Sky rider Christopher Froome of Britain (R) leads his team mates as they cycle past an onion field during the 195 km eight stage of the centenary Tour de France cycling race from Castres to Ax 3 Domaines July 6, 2013. REUTERS/Jacky Naegelen ( CYCLING-TOUR/ )

Spectators disguised as elderly persons cheer riders as they hold a placard reading "The centenarian people of the Tour !" in reference of the centenary of the Tour de France cycling race, during the 195 km eighth stage of the 100th edition of the Tour de France cycling race on July 6, 2013 between Castres and Ax 3 Domaines, southwestern France. JOEL SAGET/AFP/Getty Images ( 521177848 )

The pack climbs towards Pailheres pass during the eight stage of the Tour de France cycling race over 195 kilometers (122 miles) with start in Castres and finish in Ax 3 Domaines, Pyrenees region, France, Saturday July 6 2013. (AP Photo/Christophe Ena) ( Cycling Tour de France )

The pack climbs Pailheres pass during the eight stage of the Tour de France cycling race over 195 kilometers (122 miles) with start in Castres and finish in Ax 3 Domaines, Pyrenees region, France, Saturday July 6 2013. (AP Photo/Christophe Ena) ( APTOPIX Cycling Tour de France )

Britain's Christopher Froome (R) rides during the 195 km eighth stage of the 100th edition of the Tour de France cycling race on July 6, 2013 between Castres and Ax 3 Domaines, southwestern France. JOEL SAGET/AFP/Getty Images ( 521181752 )

Team Saxo-Tinkoff rider Alberto Contador of Spain leads his team as they climb the Pailheres pass in the Pyrenees during the 195 km eight stage of the centenary Tour de France cycling race from Castres to Ax 3 Domaines July 6, 2013. REUTERS/Eric Gaillard ( CYCLING-TOUR/ )

France's Pierre Rolland rides as disguised supporters run next him during the 195 km eighth stage of the 100th edition of the Tour de France cycling race on July 6, 2013 between Castres and Ax 3 Domaines, southwestern France. PASCAL GUYOT/AFP/Getty Images ( 521182025 )

France's Thomas Voeckler spreads water on his head as he rides in the breakaway during the 195 km eighth stage of the 100th edition of the Tour de France cycling race on July 6, 2013 between Castres and Ax 3 Domaines, southwestern France. PASCAL GUYOT/AFP/Getty Images ( 521182072 )

Two spectators with a sign in Dutch reading "Mama it is good here" frun after Nairo Alexander Quintana of Colombia as he climbs towards Ax 3 Domaines during the eight stage of the Tour de France cycling race over 195 kilometers (122 miles) with start in Castres and finish in Ax 3 Domaines, Pyrenees region, France, Saturday July 6 2013. (AP Photo/Laurent Cipriani) ( APTOPIX Cycling Tour de France )

A supporter runs alongside Nairo Alexander Quintana of Colombia as he climbs during the eight stage of the Tour de France cycling race over 195 kilometers (122 miles) with start in Castres and finish in Ax 3 Domaines, Pyrenees region, France, Saturday July 6 2013. (AP Photo/Laurent Cipriani) ( Cycling Tour de France )

AX 3 DOMAINES, FRANCE - JULY 06: 6: Richie Porte of Australia and SKY Procycling in his way to second place during stage eight of the 2013 Tour de France, a 195KM road stage from Castres to Ax 3 Domaines, on July 6, 2013 in Ax 3 Domaines, France. (Photo by Bryn Lennon/Getty Images) ( 173075375 )

A fan waves a British flag as new overall leader Christopher Froome of Britain sprints towards the finish line to win the eight stage of the Tour de France cycling race over 195 kilometers (122 miles) with start in Castres and finish in Ax 3 Domaines, Pyrenees region, France, Saturday July 6 2013. (AP Photo/Laurent Cipriani) ( Cycling Tour de France )

New overall leader Christopher Froome of Britain climbs towards Ax 3 Domaines during the eight stage of the Tour de France cycling race over 195 kilometers (122 miles) with start in Castres and finish in Ax 3 Domaines, Pyrenees region, France, Saturday July 6 2013. (AP Photo/Laurent Cipriani) ( Cycling Tour de France )

New overall leader Christopher Froome of Britain crosses the finish line to win the eight stage of the Tour de France cycling race over 195 kilometers (122 miles) with start in Castres and finish in Ax 3 Domaines, Pyrenees region, France, Saturday July 6 2013. (AP Photo/Laurent Rebours) ( APTOPIX Cycling Tour de France )

AX 3 DOMAINES, FRANCE - JULY 06: 6: Jean-Christophe Peraud (l) of France and AG2R La Mondiale and team mate Romain Bardet recover after at the end of stage eight of the 2013 Tour de France, a 195KM road stage from Castres to Ax 3 Domaines, on July 6, 2013 in Ax 3 Domaines, France. (Photo by Bryn Lennon/Getty Images) ( 173075290 )

Stage winner Britain's Christopher Froome celebrates on the podium after winning the 195 km eighth stage of the 100th edition of the Tour de France cycling race on July 6, 2013 between Castres and Ax 3 Domaines, southwestern France. JEFF PACHOUD/AFP/Getty Images ( 521180995 )