This trail running event is already firmly established in the international race calendar and is an attractive challenge for endurance athletes. Four courses with different distances and difficulty levels: "Active", "Mountain", "Sky" and "Extreme" and altitude differences of up to 3600 m, which corresponds to 90 kilometers. In addition, there is also a "Vertical" race (Vertical Zermatt Sunnegga). So every runner can find the race that suits him. There is also a race for the children.