China's Guo Shuang won a third gold at the track cycling World Cup in Beijing Sunday, completing a perfect comeback after she was forced out of the competition last year through injury.

Guo's victory in the Keirin, when she surged to the front with one lap to go, comes after she claimed titles in the women's sprint and team sprint in the first two days.

The 25-year-old, a bronze medallist at the Beijing Olympics, is now looking to the London 2012 Games.

"I will go to London for the next World Cup stop after this race. I want to get myself ready for the London Olympics," she was quoted as saying by China's state-run Xinhua news agency.

Charlie Conord from France beat local star Zhang Lei to win the men's sprint, with Russian Denis Dmitriev taking bronze.

The Czech Republic's Martin Blaha and Vojtech Hacecky took gold in the men's madison, with Belgium and Spain in second and third.