Registrations
Registration 2024
Registration for the 2024 Mont Blanc Marathon is online only, with payment by credit card.
Registration for the 2024 Mont Blanc Marathon will take place in 2 phases:
Draw for the Duo Etoilé, 23km, 42km and 90km of the Mont-Blanc 2024.
Runners wishing to take part in the Duo Etoilé, 90km, 42km, 23km du Mont-Blanc 2024 will be able to register free of charge for the draw from Friday, October 20, 2023 at 9:00 am to Monday, November 6, 2023 at 12:00 pm. It will be possible to register for just one of the 4 races, as a group or as an individual (draw result identical for all group members). The results of the draw will be communicated by e-mail on Friday, November 10, 2023. Runners selected in the draw will then have until noon on Wednesday November 22, 2023 to finalize their registration by making their payment (a specific procedure will be sent to them by e-mail).
For all races not subject to a draw (10km, KMV, Young Race, Mini cross)
Registration from Monday November 13, 2023 at 9:00 am. Registration will be possible without a draw until all available places have been filled.
NEW FOR 2024: the Star Duo is now subject to a draw.
Choosing your race
The Mont Blanc Marathon races take place in the mountains, on technical courses with significant differences in altitude. To take part in these races, 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 remind you that it is generally considered that 100 m of positive ascent corresponds to 1 km of additional running.
For example: the 42km Mont-Blanc with a positive altitude difference of 2730m, corresponds to a distance of 42km + 27km, or 69km. We therefore recommend that you take into account the difference in altitude before registering for a race.
Race | Distance | Diff of heights +/- | Distance Feels | Max time | Number of Time restrictions | ITRA points recommended | Number of participants | % of Finishers | Technical features |
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| 91km | 6220m +/- | 152km | 24 hours | 10 | 450 | 1000 runners | 55% | Technical race with aerial trail in altitude, possibility of snow on the course |
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| 42km | 2730m+ / 1700m- | 69km | 9 hours 30 | 5 | 350 | 2300 runners | 87% | Rolling first part, and some trails are very technical with an important difference of heights |
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| 23km | 1680m+ / 870m- | 39km | 6 hours | 4 | 270 | 2000 runners | 94% | Short race on mountain trails open to intermediate trailers |
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| 20km | 1250m +/- | 32km | 6 hours | 3 | 240 | 500 teams | 97% | Night race by team mountaineering and steep parts |
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| 3,8km | 1000m +/- | 13,8km | - | 0 | - | 700 runners | 100% | Aerial race , handrail, stairs etc. not recommended to people afraid of heights. |
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| 10km | 325m +/- | 13km | - | 0 | 160 | 1000 runners | 99% | Race open to everybody |
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| 15km | 1200m D+ | 27km | - | 0 | 0 | 150 runners | 98% | Race reserved to 'Espoir' and 'Junior' category |
Solidarity bibs
Since 2016, the Club des Sports de Chamonix has been selling solidarity bibs to fund sporting projects.
In 2023, thanks to the €70,000 raised, 250 young people from 11 sections were able to make their dreams come true.
For runners, it's the chance to guarantee their entry in one of the Mont Blanc Marathon races by making a donation to help children in their sporting projects.
Tour operator
Plan your trip to Chamonix with our Tour Operator partners.
Sports Tours
Sport Tour International offers travel and assistance packages for this wonderful event. A guaranteed race number and hotel accommodation in the center of Chamonix are available, as well as transfers from Geneva airport and the support of an experienced race guide.
Run the Alps
Our aim? To find the best trail running experiences in the Swiss, French and Italian Alps. Away from the crowds, in the villages of the high Alpine mountains, we'll be looking for trails that are a little quieter, wilder and bring together all the best the Alps have to offer.