This 26 mile loop around the Zermatt valley was one of the best days of trail running I've had in my entire life. Although there is a lot of elevation gain, there’s also a huge amount of runnable trail. If you’re looking for a trail that gets the ‘best of Zermatt’ in one push, this is it. Otherwise, the magic of the alps is such that you could slice and dice this route any number of ways — save your legs by utilizing the lifts, or easily break it up into multiple days.