This is a hilly and challenging 50K, with over 1,300m of ascent, but it rewards you with some of the most stunning views in Scotland. The route follows the magnificent South Loch Ness Trail and the Trail of the 7 Lochs. You'll climb through ancient woodlands, pass the stunning Falls of Foyers, and run along high single tracks that offer breath taking vistas over the water (keep an eye out for Nessie!).