Less than 24 hours before they set off on their grueling alpine marathon, Trevor, Angeline and Reg make their final preparations.

Full alcohol ban is in place and the challengers are taking on plenty of fluids and carbs in preparation for the mammoth task tomorrow.

Davos, where the race is being held, is a beautiful alpine town frequented by the Royal family during the ski season and home to the World Economic Forum held annually here.

But tomorrow thousands of athletes across the world will take to the Swiss alps to run a full 26 mile marathon which can last up to 10 hours. So final location recce today and up at 6am tomorrow to make sure everyone is in place to capture our challengers cross the line.

McCann team have also recce’d the location for the wrap party a whole day in advance too. That’s experience for you. Signing out. McCann man on the ground in Davos, Switzerland. Graham Nolan.