About This Event
The Inferno Halbmarathon and relay race stands as one of Switzerland's most demanding mountain running challenges, designed specifically for experienced mountain runners who come prepared for alpine conditions. Starting in the valley town of Lauterbrunnen and finishing atop the dramatic Schilthorn peak, this race demands not only exceptional fitness but also a high degree of self-reliance and proper mountain running equipment. Set against the backdrop of the Bernese Oberland, runners face unpredictable alpine weather that can change rapidly throughout the race day. The event's reputation for difficulty is well-earned, with organizers emphasizing the need for thorough preparation and appropriate gear. The race offers both individual and three-person relay options, making it accessible to teams while maintaining its serious mountain running character. Beyond the physical challenge, the event provides a complete mountain running experience with cable car descents included, pasta parties, and professional support services including medical care and massage. The August timing typically offers the best conditions for this high-altitude challenge, though runners must always be prepared for the mountains' unpredictable nature.
Choose Your Distance
Half Marathon
Half Marathon Relay
A three-person relay covering the same demanding route as the individual race, with exchanges at Grütschalp and Höhenlücke. Each runner tackles a distinct section with varying elevation profiles, from the opening valley climb to the final summit push on the most technical terrain.