The Adventure Show heads to the remote Strathconnon glen north of Inverness for the inaugural Highlander Mountain Marathon. For two days competitors race over the hills carrying everything they need to survive. The programme is also off to the Alps to experience some extreme telemark skiing. Closer to home Cameron McNeish goes up the royal mountain of Lochnagar, and wildlife filmmaker Keith Collins is in the Cairngorms to see the magnificent osprey in action. The presenter is Dougie Vipond.