Trail du Mont-Cenis

The Trail du Mont-Cenis is a 50-kilometer trail race with 3,200 meters of elevation gain that takes place around the Col and Lac du Mont-Cenis, in the Haute-Maurienne, in the Savoie department. The race starts from Lanslebourg-Mont-Cenis, a border village situated at approximately 1,400 meters of altitude, the last French settlement before crossing into Italy via the Col du Mont-Cenis.

The Col du Mont-Cenis is one of the most historically significant Alpine passes. Used since antiquity, it has seen the passage of Roman legions, medieval pilgrims, Napoleon's armies, and the first Grand Tour travelers. The Lac du Mont-Cenis, a vast body of water situated at 1,974 meters of altitude on the summit plateau, is a reservoir lake that constitutes one of the most iconic landscapes of the Haute-Maurienne. Its mineral and austere setting, surrounded by peaks exceeding 3,000 meters, offers a strikingly beautiful backdrop.

The Trail du Mont-Cenis course takes runners into a universe of high borderland mountains. The trails follow ancient communication routes between France and Italy, laden with several centuries of history. Runners cross varied landscapes: the larch forests of the Arc valley, the alpine pastures of the Mont-Cenis plateau, the moraines and scree of rocky slopes, and ridgelines offering panoramic views across the Franco-Italian Alps.

The 3,200 meters of positive elevation gain spread over 50 kilometers represent a significant challenge. The race profile includes long and steady climbs to access the Mont-Cenis plateau from the valley, followed by more technical sections at altitude. Ridge passages expose runners to winds that often blow with force in this transition zone between the French and Italian sides of the Alps. The descents are varied, alternating between wide trails on the old mule tracks and more technical singletrack on the rocky slopes.

The Haute-Maurienne is a territory of character, marked by spectacular geology. Sedimentary rocks, gypsum, and limestone create astonishing formations, including fairy chimneys and colorful ravines. Wildlife is abundant: chamois, ibex, marmots, and golden eagles are regularly observed along the course. Alpine flora unfolds in all its diversity, with species adapted to the extreme conditions of high mountains.

For international runners, Lanslebourg-Mont-Cenis is accessible from Modane, approximately 20 kilometers away, a town served by the TGV and located at the exit of the Frejus rail tunnel. From Italy, access is via the Col du Mont-Cenis or through the Frejus road tunnel from Turin. Accommodation is available in the Haute-Maurienne villages and in the mountain refuges that dot the course.

Assistance on the Trail du Mont-Cenis is a precious asset due to the borderland and mountainous nature of the course. Weather conditions can evolve rapidly at altitude, and a local assistant capable of anticipating these changes and positioning at strategic points along the course provides invaluable support. Managing nutrition and equipment is critical on a race where temperatures can vary by 20 degrees between the valley floor and the ridges.

The Trail du Mont-Cenis is a race that combines sporting challenge with the discovery of exceptional natural and historical heritage. Running in the footsteps of the great Alpine crossings, amid grandiose and history-laden landscapes, makes this event a unique experience in the alpine trail calendar.

Trail du Mont-Cenis is a 50 km trail race with 3,200 m of elevation gain, located in Lanslebourg, Savoie. The next edition is scheduled for 16 August 2026.

Find all official information on the race website.