7. KAT100 - Marathon Trail 2026

The KAT100 Marathon Trail begins in Fieberbrunn, Austria, leading participants into the Kitzbühel Alps for a demanding mountain race, featuring significantly more elevation gain than a standard road marathon. The primary route covers 51 km with 3,250 meters of elevation gain, and participants are allotted 12 hours to complete it. This event is part of the KAT100 by UTMB, a multi-day trail running series within the UTMB World Series, which also includes other race distances: 8 km, 24 km, 81 km, and a 173 km ultra. The course commences with a challenging ascent to the Wildseeloder summit, bringing runners to high alpine terrain and lake vistas early in the race. A technical descent follows, after which the route ascends again on scenic trails towards Wildseelodersee, preceding the final downhill stretch to the finish. Aid station information is available, allowing runners to strategize their nutrition, hydration, and pacing, which is crucial on such a steep and exposed course. The event is designed for trail runners seeking a concentrated yet significant alpine challenge, distinct from a marathon-distance run on gentler terrain.