This is the story of my quest to complete Europe's oldest ultra cycling race, the Glocknerman. It's also one of the hardest at 1000km long with 18,000m of climbing and a cut off time of just 56 hours.

Last year, Global F.I.T. Ambassador Marcus Leach attempted the world's toughest one-day bike event - Tour du Mont Blanc. This challenge crosses treacherous terrain and spans over three different countries, but unfortunately for Marcus, the mountains got the better of him! This year, Marcus came back stronger than ever.

This is my story of taking on 'the world's toughest one day bike event', the Tour du Mont Blanc. 330km, 8000m of vertical ascent, three countries, one day. www.marcusleach.co.uk @MarcusLeachFood https://www.facebook.com/marcusleachfood Video courtesy of James Mitchell Photography @JamesMitchell5 https://www.facebook.com/JamesMitchellPhotography