An Olympic champion sailor is following in the footsteps of fellow gold medallist Victoria Pendleton, by swapping her sport for the sport of Kings.
Sailing star Sarah Ayton is training in Newmarket to be a jockey in the hope of competing in a charity race this summer.
Click below to watch a video report by Chloe Keedy
Sarah is no stranger to sporting success. She won Olympic gold in sailing at Athens in 2004 and Beijing in 2008.
But now she's training for the Magnolia Cup, a charity race run at Goodwood Festival on Ladies' Day in August. The race is five and a half furlongs and the horses reach speeds of up to 40mph.
The 12 women taking part all have one thing in common - they have little or no experience of horse racing.
As well as training on the horse, all participants must undergo a series of rigorous fitness tests.
Sarah says she's relishing the challenge, and is being supported every step of the way by her two young sons.
Sarah has now passed her assessment at the British Racing School in Newmarket. With just six weeks to go until race day, she now has her sights set on winning.