In short
Mont Blanc Marathon 2027: lottery entries should be accepted from Thursday, November 12, 2026 to Thursday, November 19, 2026, starting at 10:00 a.m., Paris time. Results are expected on Wednesday, November 25, 2026. The same calendar covers 90 km, Marathon, 23 km, 10 km. Race date: late June 2027 (24 to 27 June).
Estimated date: the organiser says 2027 registration opens during November 2026, in several phases, with no exact date yet. In 2025, the lottery opened on Thursday 23 October at 10 am and closed on Thursday 30 October at noon.To be confirmed once officially announced.
What are the 2027 lottery dates?
- Today
- Nov. 12, 2026 Lottery opens10:00 a.m., Paris time
- Nov. 19, 2026 Lottery entries close
- Nov. 25, 2026 Lottery results
- Late June 2027 Race day estimated dateStart time not announced yet
What do you book, at what price, with what chances?
| What you book | A spot in the lottery for a bib |
| Your odds in the lottery | ~12% (estimate, 2026 edition) Nearly 27,000 applicants. All races combined (90K, 42K, 23K, Duo Étoilé).Source: Organizer, quoted by the press. Estimate, our calculation: about 3,150 runners in the lottery (500 for the 90 km, 1,150 for the 42 km, 1,000 for the 23 km, 250 pairs) ÷ 27,000 applicants. Places taken from the official website. to be checked |
| Price | 2027 price not yet publishedRough estimate, check the official website. |
What do you need to enter?
- Medical certificate or PPS, required in France without a race license.
To be met before you can enter. Double-check the official rules.
How do you enter, step by step?
- Sign up for the official newsletterThe detailed 2027 phase calendar will be announced there.
- Enter the ballot from November 12, 2026 to November 19, 2026Chamonix time. In 2025, the lottery was open for one week, from 10 am.
- Results around November 25, 2026By email, one week after closing in 2025.
- Not drawn? Keep other optionsCharity bibs, or Chamonix valley places (10%) if you live there.
Don't miss the date
Add the upcoming dates to your calendar: your phone reminds you 1 week before the first one, then the day before each, and on the morning of results day.
The next ultra-trails to open
The ultra-trail registrations and lotteries that open next, in order.
Frequently asked questions
Mont Blanc Marathon 2027: what is the opening date?
Lottery opens on Thursday, November 12, 2026 at 10:00 a.m., Paris time. Closes on Thursday, November 19, 2026. Estimated date: the organiser says 2027 registration opens during November 2026, in several phases, with no exact date yet. In 2025, the lottery opened on Thursday 23 October at 10 am and closed on Thursday 30 October at noon. To be confirmed.
Do Chamonix valley residents get reserved bibs at the Mont Blanc Marathon?
Yes: 10% of bibs in 2026, for residents of Servoz, Les Houches, Chamonix and Vallorcine who come on foot, by bike or by public transport.
Does coming by train help you get a Mont Blanc Marathon bib?
Yes, in 2026: 40% of bibs were set aside for runners who commit to travelling to Chamonix by train or bus.
Do you have to pay a carbon offset at the Mont Blanc Marathon?
Yes, in 2026 it was compulsory for everyone, whatever the means of transport. The amount depends on the return distance between your home and Chamonix.
Mont Blanc Marathon 2027: when are the lottery results published?
Results are expected on Wednesday, November 25, 2026.