Winning the hardest dog-sled race in the world

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In 1985, Libby Riddles became the first woman to win the Iditarod dog-sled race through 1000 miles of arctic wilderness in Alaska. The race is known as one of the toughest sporting events in the world. In this programme, first broadcast in 2016, Libby speaks to Robert Nicholson. It's a Whistledown Production for BBC World Service. (Photo: Libby Riddles with her dog-sled and dogs in 1985. Credit: Getty Images)