The bike that Pippa Middleton, sister to the Duchess of Cambridge, used to take part in the Race Across America (RAAM) in June is being auctioned to raise money for charity.

The 30-year-old took part in the 3,020 mile race as part of an eight-person team, completing the coast-to-coast trip in 6 days 10 hours and 54 minutes.

She has now donated her custom-built Dassi bike, worth £2,500, to the British Heart Foundation which is auctioning it on eBay, with the proceeds split between that charity and the Michael Matthews Foundation.

Middleton said: “The challenge of riding across the Rockies, coping with the heat of the Arizona desert and climbing over 170, 000 vertical feet in the six days was incredibly tough, but every inch of the 3,000 mile race was worth it, to help the BHF fight heart disease.

“I wanted to complete this challenge to help raise awareness of the importance of heart health after learning that coronary heart disease kills nearly three times more women than breast cancer.

“So whether you’re inspired to get fit or you’re a cycling fanatic wanting to add to your bike collection, take a look at my bike and put in a bid. I’m keen to raise as much money as possible to help the BHF fund life-saving heart research,” she added.

The specification of the bike, which comes in a red padded flight bag, is:

  • Dassi 6.2 Aero Road Bike
  • 50cm Frame size
  • Carbon frame and forks
  • Selle Italia Diva saddle
  • Look Keo pedals
  • Deda handlebars and stem
  • Campagnolo Scirocco 35mm wheels
  • A mixed group set of SRAM Rival and Apex