Arosa Trailrun

The Arosa Trailrun is a September mountain trail race in Arosa with four route choices, each built around a different profile. None of the options are flat day-out runs: the shared ingredients are steep climbs, summit views, and the kind of effort that pushes heart rates high. The event is part of the Swiss Athletics Junior Trail Series, a set of 13 trail and mountain running races for young runners aged 14 and over. That series gives newcomers a clear way into trail running while also giving ambitious junior runners a place to develop on real mountain courses.