The route
99.3 km and 5,787 m of climbing across Italy, Switzerland and France, from Courmayeur to Chamonix.
Drawn with a pen, line by line
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Indicative figures computed by Plotrek on its illustrative route, with altitudes from a terrain model. They may differ from the organiser's.
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CCC crosses three countries in one push: the start, in Courmayeur, Italy, is at 9 am; the finish, in Chamonix, France, comes after a stretch through Switzerland.
The course tops out early, at Tête de la Tronche (2,536 m), before swinging toward the first col of the race, Grand Col Ferret.
Past the col, the descent reaches La Fouly then Champex-Lac, in Switzerland, before climbing back up to Les Tseppes.
It passes Col des Montets and La Flégère before dropping into Chamonix. Starting on Friday, runners have until Saturday late morning to finish — a 27-hour cutoff.
Paths and places: © OpenStreetMap contributors. Altitudes measured on the route.
03 · Your poster
The relief of the course, from Courmayeur to Chamonix, takes shape as contour lines: our pen plotter draws it with a pen, line by line. Your finisher name and time go in the title block, in A4, A3 or A2.
Shipped from our workshop in Le Bouscat
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Updated Route and text: Plotrek workshop (Fabrice Jolivet)
The organiser announces 101.4 km and 6,015 m of elevation gain for the 2026 edition. Plotrek's illustrative route, redrawn on OpenStreetMap paths, measures 99.3 km and 5,787 m of gain. Start: Courmayeur; finish: Chamonix; on the way, Champex-Lac at km 54.7. The elevation loss measured on this route is 5,966 m.
27 hours for the 2026 edition, according to the organiser's website, read on 17 September 2026. That is the time allowed to cover the announced 101.4 km. Start: Courmayeur, at 9 am. The time limit can change from one edition to the next; the organiser's rules prevail.
Tête de la Tronche, at 2,536 m, at km 8.9 of Plotrek's route. The organiser gives a maximum altitude of 2,556 m for the 2026 edition. The high point lies between two landmarks of the course: Courmayeur (1,220 m, km 0) and Grand Col Ferret (2,519 m, km 30.1).
1,326 m of elevation gain in one go, from km 0.3 to km 8.9 of Plotrek's route. It starts at Courmayeur (1,220 m). Landmark on the way: Tête de la Tronche (2,536 m, km 8.9). No other climb on the 99.3 km course is as long.
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