Italy's Vincenzo Nibali convincingly won the 20.6km uphill time trial to move more than four minutes ahead of Cadel Evans in the battle for the maglia rosa.
Spain's Benat Intxausti won a three-way sprint to take stage 16 of the Giro d'Italia ahead of Tanel Kangert and Przemyslaw Niemiec in Ivrea.
Peter Sagan won stage eight of the Tour of California from San Francisco to Santa Rosa as Tejay van Garderen secured the overall title.
Giovanni Visconti defied the snow to take a remarkable solo victory at the Marco Pantani monument on the Col du Galibier in stage 15.
Britain's Mark Cavendish won the longest stage of the Giro d'Italia after another thrilling bunch sprint in Cherasco.
Britain's Mark Cavendish secured his 100th professional win in a sodden stage 12 as Bradley Wiggins lost more than three minutes to his rivals.
Peter Sagan won stage three of the Tour of California in a sprint finish, with Janier Acevedo retaining overall control.
It was a mixed day for Team Sky as Bradley Wiggins lost more time to his rivals, while Rigoberto Uran soloed to victory.
Dutchman Lieuwe Westra won the opening stage of the 2013 Amgen Tour of California from Spain's Franciso Mancebo.
Britain's Mark Cavendish won a fast bunch sprint at the end of stage six of the Giro d'Italia in Margherita di Savoia.
Cycling
Giro d'Italia
Tour de France
Olympic Games
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