13th Arosa Trailrun 2026

On 12 September 2026, the 13th Arosa Trailrun sends mountain runners onto the high trails above the village for a single day of racing across genuine alpine terrain.

The event

The Arosa Trailrun is a mountain race through some of the most dramatic terrain in Graubünden, now in its 13th year. It offers four distances on real alpine trails, each with sustained climbing, technical rocky sections and the unpredictable element of September mountain weather:

• AT15: 15 km with 976 m of climbing, the entry-level route and a strong first mountain race.
• AT22: 22 km with 1,321 m of climbing, a middle distance that suits half-marathon runners adding elevation.
• AT33: 32.8 km with 2,138 m of climbing, taking in the best alpine sections of the main course.
• AT54: 54.3 km with 3,456 m of climbing, the ultra distance for seasoned runners, with a 360-degree panorama over Arosa.

Courses follow established hiking paths up to high alpine ground and back down toward the village. Aid stations provide water and food at intervals, but runners stay largely self-sufficient in between, so trail shoes with grip, layered clothing and the mandatory kit all matter. The atmosphere mixes serious effort with real camaraderie: volunteers at the aid stations keep spirits up and the finish area stays busy all day. Longer distances start earlier in the morning, and the organiser sends exact start times, course maps, elevation profiles, cut-off times and aid-station locations to registered runners.

Practical information

When: Saturday 12 September 2026, with staggered start times by distance.
Where: Start and finish in the centre of Arosa, on trails around the village and the surrounding mountains.
Distances: AT15, AT22, AT33 and AT54, from 15 to 54.3 km.
Entry: Registration and full race information are on the official site, arosa-trailrun.ch. Popular distances fill early, so enter in good time.
Getting there: The start is a 5 to 15 minute walk from the hotel. On race day, walk rather than drive, as parking is limited and some roads close for runner safety.

Plan your stay

Altein, a Faern Collection Resort, sits in the centre of Arosa within a short walk of the start and finish, an easy base for race weekend. Arrive a day or two early to adjust to the altitude and walk a few sections of the course. Afterwards, ease tired legs in the spa and refuel at the restaurants and bars without needing to travel. Supporters can move easily between viewing points and a warm room while they wait. Come and take on the trails with us in Arosa.