Episode 4

This month the Adventure Show is in Torridon for the Celtman Extreme Scottish Triathlon. And extreme is the word - starting with a 3,000-metre, open-water swim that's followed by 202 kilometres of biking. The finale is a 42-kilometre run through some of the most demanding mountain terrain in Scotland. Added to that, this year the high winds and driving rain make a race that is arguably the toughest of its kind anywhere in the world even tougher. For most just finishing is a major achievement.

We're also looking ahead to winter with an exclusive preview of a new smartphone app that could, quite literally, save your life. And Duncan McCallum has polished up his wheels and checked his gears for an adventure with elite mountain biker Lee Craigie.