With the 2017 Cheltenham Festival about to begin, a look back at the Gold Cup in 1986, as Irish mare Dawn Run makes history.

Dawn Run had already confirmed her place in the pantheon of great race horses as the Cheltenham Festival neared in 1986. The only horse to have ever won the English, Irish and French Champion Hurdle treble (in 1984), owner Charmian Hill had long set her sights on Cheltenham Gold Cup glory, with the chance for the Paddy Mullins trained horse to create history, and become the first winner of both the Champion Hurdle and Gold Cup. But there would be many hurdles to clear before Dawn Run's date with destiny on March 13, 1986.

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