The Adventure Show is in Torridon for the Celtman Extreme Scottish Triathlon, an event which starts with a 3km open water swim that is followed by over 200km of biking. The finale is a 42km run, with an ascent of one of Scotland's Munros thrown in for good measure. It has been described as one of the toughest days of your life and, for most, just finishing is a major achievement.

This is cycling at its most extreme an event that isn't a race but where entrants battle both the clock and their own pride. Welcome to the very specialist world of Audax, where just completing the route equals success. The Highlands, Glens and Western Isles ride is the toughest ever to be staged in the UK.