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A few tears of the Sarine river as a starter, a scoop of Gastlosen as the main course and
a pinch of Lac Léman for dessert

Bridge over troubled water

70 KM AND 3’800 M D+

A new route starting from the traditional chalets of Gstaad-Saanenland on the banks of the Sarine. Ever heard of the Röstigraben? We're right here on this famous rock barrier that artificially separates German-speaking and French-speaking Switzerland.Right from the start, things get serious with an initial climb of around 13km and almost 1,000m of positive ascent to reach the Cabane de Grubenberg and its impressive view of some of the "4,000" of the Alps.The survivors of this rather solid start will then head for the magnificent Gastlosen range, the "Dolomites of Switzerland", whose slopes in the cantons of Bern and Vaud are much less well known than their Fribourg counterpart. Here, we find ourselves at the heart of the production of Etivaz, a hard alpine cheese, and it's not uncommon on this stretch to come across its main horned contributors, as well as the marmots that are also fond of the area.

After a superb run under the Dents de Ruth, de Savigny or de Combette, the route heads back down to Rougemont for a 2nd refreshment point right in the middle of the Pays-d'Enhaut, which the runners then continue to conquer past Château-d'Oex, the capital of hot-air balloons, then Les Moulins (3rd refreshment point) before starting the ascent to Lac de l'Hongrin and then the Rochers-de-Naye with its incredible panorama of Lake Geneva. The long descent towards Montreux won't be easy, but between the mountain pastures, the plunging views over the lake and the - almost exotic - Gorges de Chauderon, the time should fly by. And did we mention the final plunge onto the beach at Clarens?

Are you tempted? Don't worry, we haven't told you everything yet! Breathtaking!




Start: Saanen, Dorfstrasse, Saturday 27 July, 9.00 am
Finish: Clarens (Montreux), Plage du Pierrier, until Sunday 28 July, + 25h race time


Friday 26 July from 5pm to 8pm (Clarens-Montreux)
Saturday 27 July from 6.30am to 8.30am (Dorfstrasse, Saanen)


Grubenberghütte, Rougemont, Les Moulins, Hongrin, Col de Chaude


  • Grubenberg, 4h of running

  • Les Moulins, 10h of running

  • Col de Chaude, 18h of running


Water reserve (1 litre minimum), waterproof jacket with a hood (10’000 mm/h), headlamp with spare batteries,  personal beaker, survival blanket, whistle, food reserve, long running trousers (leggings or a combination of leggings and long socks allowed), warm long-sleeved shirt (arm sleeves allowed), mobile phone working in Switzerland turned on.


Gloves, spare T-shirt, cap or bandana, sunglasses, sun cream


Participants may drop off their personal belongings at the start in Saanen on Saturday morning, and pick them up upon arrival at the finish line in Clarens (Montreux).
The organizer declines any responsibility in case of loss, damage or theft of any valuable item


A transport plan will be available a few days before the race but Saanen is easily reached by a direct train from Montreux.


★★★ A great first experience of long-distance trail running, a demanding race for runners used to half-marathon or marathon distances.


01.11.2023 – 31.11,2023
01.12.2023 –30.06.2024
from 01.07.2024                         
Race day (until one hour before the race start)                          

100 CHF
105 CHF
110 CHF                             

120 CHF                             

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