42km Legendary event
Mont-Blanc 42km
The weekend's flagship race, stage 2 of the Salomon Golden Trail World Series.
It brings together the very best in the discipline to wage a breathless battle in a dream setting.
First on the fast, rolling trails of the first part of the race, then on the steep, technical slopes of the aiguillette des Posettes, the main difficulty of the course, to finish facing the incredible panorama of the Mont-Blanc range.
To take part in this race, it is recommended that you have good mountain running experience, are at ease on all types of terrain and are self-sufficient for several hours. We draw your attention to the fact that a runner without an UTMB performance index above 350 points has very little chance of finishing the race, so it is more advisable to take part in another Mont Blanc Marathon event.
Race course
Semi-autonomous TRAIL. Open to 'Espoir' category and above
6 starting waves
2,300 runners maximum
Maximum time: 10 hours
3 full feed stations
1 finish refreshment station
Delivery of race numbers
Number collection at Place du Mont-Blanc by appointment only:
- Thursday June 27, 2024 by appointment
- Friday June 28, 2024 by appointment
- Saturday, June 29, 2024 by appointment
Participants will only be able to pick up their race numbers during the time slot they have chosen. No bibs will be issued to runners outside their time slot. At the 42km race number collection, runners must present their photo ID and race bag, including all compulsory equipment for the timing chip and equipment check. Race numbers will not be issued to runners who fail to present their bags and equipment.
No race numbers will be issued on Sunday morning before the start of the race.
Compulsory equipment
- Cell phone.
- Minimum 0.50-liter water supply.
- Waterproof jacket with hood (gore-tex type) adapted to your size.
- Whistle.
- Survival blanket.
- Tumbler
Recommended equipment depending on weather conditions
- Cap.
- Tights.
- Gloves.
- Roll of straps.
- Bowl and spoon.
- A little money
SAS start organization
The start of the Mont-Blanc 42km is organized in 4 waves.
Depending on your airlock, please report to the location shown on the map below.
Description of the 42km Mont-Blanc course
After setting off from the Place du Triangle de l'Amitié in Chamonix (1035m), you gradually climb up the Chamonix valley, passing through the hamlets of Les Bois and Le Lavancher to reach Argentière (1250m).
Runners bypass the village of Argentière and reach Le Planet via the Chemin des Rambles, before continuing along the small northern balcony to the village of Le Tour.
From here, the route heads towards the Aiguillette des Posettes (2185m) along a path passing through the Chaleyre.
The route then descends to the village of Vallorcine via the Col des Posettes (1997m) and the Plan de l'Envers path.
From Vallorcine (1260m), you reach the hamlet of Le Buet, then take the Chemin des Diligences to the Col des Montets (1461m) in the heart of the Aiguilles Rouges nature reserve.
Facing the Mont-Blanc chain, the path rises to La Flégère (1875m).
After a balcony traverse to the combe de la Charlanon, you'll finish with a long descent on a lovely path that takes you back to Chamonix to finish the run on the Place du Triangle de l'Amitié.
Time barriers
The time limits indicated below are given for information only, and may be modified if necessary for the safety of participants. In the event of adverse weather conditions, and for safety reasons, the organization reserves the right to stop the event in progress or modify the time limits. All decisions will be taken by the race jury.
A runner arriving at a time barrier after the deadline will be disqualified. The lower right-hand corner of the race number will be "cut out" by the race marshal, and the runner will be asked to take public transport back to Chamonix. If the runner wishes to continue the race, his or her number will be collected by the station chief and the runner will no longer be considered a participant in the 42km du Mont-Blanc, and will therefore no longer be under the responsibility of the organizer.
Anyone disrespecting the volunteers in charge of this function will be permanently banned from all Mont Blanc Marathon events.
- Tour feed station (km 14 ): start time of last wave + 2h45.
- Vallorcine feed station (km 23.5): start time for last wave + 5.30 hrs.
- La Flégère feed station (km 34): start time for last wave + 8.30 hrs.
In the case of a wave start, time barriers are calculated according to the start time of the last wave.