U.S. actress Kate Hudson poses for photographers as she arrives for the premiere of the film 'Fool's Gold' at Leicester Square in London April 10, 2008.[Agencies]

Kate Hudson accompanied rumoured boyfriend Lance Armstrong to Canada at the weekend for a charity bike ride. The 'Fool's Gold' actress and the cycling champion - who reportedly began dating last month - travelled to Ontario where Lance was joined by 40 local residents for the 117-kilometre race to help raise over $1 million on Saturday.

The Ride With Lance event was held to benefit cancer research at two hospitals, Grand River Hospital in Kitchener and Sunnybrook Hospital in Toronto. Before the race, Kate and Lance - who has battled testicular cancer in the past - spent a romantic few days together.

They had a mini vacation in Muskoka where Kate's mother, Goldie Hawn, has a cabin. On Friday, Kate took her four-year-old son Ryder out for lunch and ice cream in the trendy Toronto Yorkville shopping district and was also spotted with Lance's children, Luke, eight, and six-year-old twin girls Grace and Isabelle, while he prepared for the race. Later that night, the couple were seen canoodling in the lobby of their hotel.

An onlooker said: "He was laughing and she was laughing and they put their arms around each other. It was sweet." After Saturday's race, the actress joined Lance for a gala dinner at a country estate where they happily posed for photos.