Sarah Walker of New Zealand has won her second world title at the UCI BMX World Championships in Adelaide.
Walker, 21, won the BMX world title on Saturday night and made it a double with victory in the Cruiser class on Sunday night.
Earlier, she won all of her three qualifying events.
The Cruiser class is for bikes with a 24inch diameter wheel or larger.
Walker won a silver in 2007 in Canada and a bronze last year in China. She was placed fourth at the Beijing Olympics.