Mongol Derby horse race entrant Sarah Carroll ready for tough event

Preparing for "pure madness" in the saddle is a dream come true for Queenslander Sarah Carroll, who will take the reins in the world's toughest and longest horse race.

Ms Carroll is one of only 40 riders selected from across the globe to ride in the Mongol Derby next month.

Riders will find their way through 1,000 kilometres of Mongolian steppes while changing horses every 40 kilometres.

"The premise is probably pure madness and it's not for the faint-hearted as only about 50 per cent make it to the finish line," Ms Carroll said.

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Article written by: Jessica Hinchliffe and Kate O'Toole