Collontrek 2026: trail running between Italy and Switzerland

A natural border between two valleys

On September 5, 2026, the Collontrek returns, a trail running competition that defines the concept of mountain sports integrated into the local landscape. The event is not limited to its competitive dimension but offers a cross-border traversal that connects the Alta Valpelline, in Italy, with the Val d'Hérens, in Switzerland. The route winds along historical paths used for centuries by shepherds and travelers to cross the Alpine barrier.

The geography of the route

The start is set in the territory of Bionaz, near the Place-Moulin Dam. The latter, an impressive piece of civil engineering from the 1960s, offers a striking starting point, nestled at nearly 2,000 meters above sea level. The artificial reservoir, with its emerald-hued waters, serves as the transition point between the urbanized context and the wilderness of high altitude.

The course extends for approximately 22 kilometers, leading participants toward the Col Collon. Located at an altitude of 3,069 meters, this pass represents the highest point of the race. The climb challenges athletes in a glacial setting of rare beauty, where bare rock and perennial snow define a landscape that requires technical preparation and respect for the high-mountain environment.

A bridge between Alpine cultures

The cross-border nature of Collontrek enhances the historical bond between the communities of Bionaz and the Swiss Valais. The race becomes an opportunity to rediscover ancient transhumance paths and trade routes, bringing the importance of Alpine passes as places of encounter rather than separation back to the center of cultural debate. The experience is both an exercise in physical endurance and a privileged moment to observe the Alpine ecosystem.

Technical details and logistics

The event will take place on September 5, 2026. The competition starts from the Place-Moulin reservoir and covers a 22 km route with significant elevation gain. Participants are advised to carefully check the official regulations, mandatory safety equipment, and weather forecasts for the race day. For detailed information regarding registration, available race numbers, and access to the race course, please consult the official website of the event.