• Ultra-high mountain trail running training course in Chamonix!
  • Ultra-high mountain trail running training course in Chamonix!
  • Ultra-high mountain trail running training course in Chamonix!
  • Ultra-high mountain trail running training course in Chamonix!
  • Ultra-high mountain trail running training course in Chamonix!
  • Ultra-high mountain trail running training course in Chamonix!
Chamonix-Mont-Blanc / Mont Blanc Massif - France

Ultra-high mountain trail running training course in Chamonix!

Réf : AUORMI

In summary

  • Sports
    Trail running
  • Duration
    3 days
  • Level
    Expert

    Levels

    Trail running
    Beginner
    For those looking to discover trail running. You run for one hour twice a week and have no particular mountain experience. You will cover distances of 10 to 15 km, with an elevation gain of around 800 m per day, on smooth trails or alpine pastures.
    Intermediate
    For those with an UTMB Index of 350 (as a reference point), you will run twice a week and complete a few long runs. You will undertake 4–5 hour outings covering roughly 15 to 20 km per day, with 1,000 m of elevation gain on narrow trails.
    Confirmed
    For those with an UTMB Index of 450 or higher (as a guideline), you will run 2 to 3 times a week, including at least one long run. You will complete 4- to 6-hour outings covering approximately 25 km and 1,500 m of elevation gain per day, traversing runnable trails, alpine pastures, and narrow paths.
    Advanced
    You have an UTMB Index of 500 or higher and run 3 to 4 times a week, including at least one long run. You have previously completed trail runs of at least 30 km with 1,700 m of elevation gain. You will be undertaking daily 7-hour outings covering approximately 35 km and 2,000 m of elevation gain across varied terrain, including runnable trails, alpine pastures, scree slopes, and snow patches.
    Expert
    You have an UTMB Index of 550 or higher and run 4 to 5 times a week, including one long run (2–3 hours). You have previously completed trail runs of at least 40 km with 2,000 m of elevation gain. You will undertake outings lasting approximately 8 hours, covering around 35 km and 2,500 m of elevation gain per day across scree slopes, ridges, off-trail terrain, snow patches, and more.
  • Destination
    Chamonix-Mont-Blanc / Mont Blanc Massif - France
  • Age
    From 18 - 70 years
  • CO₂-Emissions
    8.51 kg CO2
  • Type of stay
    This group trip is perfect for travelers who want to experience a sporting adventure with other enthusiasts and be guided.
    Type of stay
    In a group
  • Languages
    French
    English

In a few words

Join a challenging trail running course, created for lovers of elevation gain and kilometers, from July 24th to 26th, 2026.

A total immersion in the wild nature of the Chamonix valley . Guided by Corentin, aka "un kette en baskette", you will set off to discover secret and little-frequented routes , far from the crowds, for three days of intense and authentic hiking .

The program includes approximately 84 km of running with 73,000 m of positive elevation gain , exposed sections and a night in a refuge , for a human adventure that is as demanding as it is memorable.

This training camp is aimed at experienced trail runners wishing to prepare for an ultra-marathon.

A minimum level of 48 Betrail points ,

An experience tailored for mountain enthusiasts, those who enjoy effort (and beer) , to be lived in a magnificent setting, between steep slopes, spectacular views and laughter at the summit.


This internship is sponsored by the Belgian beer La THArée, which you will all be able to taste at the end of the internship.

The highlights

  • A breathtaking view of the Mont Blanc massif
  • An incredible trek with an overnight stay in a mountain refuge
  • Aerial walks and a recovery beer at THArée
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Photos

Sport

Level

Trail running

Expert

Levels

Trail running
Beginner
For those looking to discover trail running. You run for one hour twice a week and have no particular mountain experience. You will cover distances of 10 to 15 km, with an elevation gain of around 800 m per day, on smooth trails or alpine pastures.
Intermediate
For those with an UTMB Index of 350 (as a reference point), you will run twice a week and complete a few long runs. You will undertake 4–5 hour outings covering roughly 15 to 20 km per day, with 1,000 m of elevation gain on narrow trails.
Confirmed
For those with an UTMB Index of 450 or higher (as a guideline), you will run 2 to 3 times a week, including at least one long run. You will complete 4- to 6-hour outings covering approximately 25 km and 1,500 m of elevation gain per day, traversing runnable trails, alpine pastures, and narrow paths.
Advanced
You have an UTMB Index of 500 or higher and run 3 to 4 times a week, including at least one long run. You have previously completed trail runs of at least 30 km with 1,700 m of elevation gain. You will be undertaking daily 7-hour outings covering approximately 35 km and 2,000 m of elevation gain across varied terrain, including runnable trails, alpine pastures, scree slopes, and snow patches.
Expert
You have an UTMB Index of 550 or higher and run 4 to 5 times a week, including one long run (2–3 hours). You have previously completed trail runs of at least 40 km with 2,000 m of elevation gain. You will undertake outings lasting approximately 8 hours, covering around 35 km and 2,500 m of elevation gain per day across scree slopes, ridges, off-trail terrain, snow patches, and more.
You have an UTMB Index of 550 or higher and run 4 to 5 times a week, including one long run (2–3 hours). You have previously completed trail runs of at least 40 km with 2,000 m of elevation gain. You will undertake outings lasting approximately 8 hours, covering around 35 km and 2,500 m of elevation gain per day across scree slopes, ridges, off-trail terrain, snow patches, and more.

The expert's opinion

This course is for trail runners who are used to long outings and have already completed distances of more than 40km with 2000m of elevation gain in a day.

In order for the three days to run as smoothly as possible, the main intensity zones worked will be from zone 2 and from time to time on the specific exercises given by your guide, from zone 3.


In figures

Trail and road running

  • Average duration/day: 3h30
  • Average distance/day: 29 km
  • Average daily elevation gain: 2434 m
  • Average daily descent: 1950 m
  • Exposed Passages: Yes

Management

During this stay, a supervisor will be present to guide and assist you.
Band : 1 supervisor for 2 to 8 people
Languages ​​spoken:
French
English
Corentin

Corentin will be delighted to guide you during this trip. Trained by Sébastien Chaigneau and a member of Team Trail UYN FRANCE, his expertise will help you improve your technique. A section on race nutrition will also be covered during your training.

Beyond his love of sports, Corentin appreciates wild and remote places. Rest assured he'll be delighted to take you to magical natural spots and along routes far from the tourist crowds!

Corentin will be delighted to guide you during this trip. Trained by Sébastien Chaigneau and a member of Team Trail UYN FRANCE, his expertise will help you improve your technique. A section on race nutrition will also be covered during your training.

Beyond his love of sports, Corentin appreciates wild and remote places. Rest assured he'll be delighted to take you to some magical natural spots!

Management

Security


  1. Mountain trail running experience is mandatory.
  2. Participants must be of legal age.
  3. Follow the technical specifications regarding the required equipment.

Other supervisors

Corentin, also known as Kette en Baskette (on Facebook and Instagram), is a mountain guide and special education teacher. He left Belgium to pursue his passion for the mountains. He loves sharing his appreciation for nature's beauty and leading people on secluded trails. Also a trail running coach, he enjoys sharing his expertise to help you improve.
Learn more about supervision

Program

Day 1
Day 2
Day 3
  • map

    crossing the Aiguilles Rouges massif

    • Transportation TER / Metro / Tram - 01h - 40km
    • Activity Trail and road running
    • Duration of the activity 10h
    • Distance 40 km
    • Positive elevation gain 3100 m
    • Negative elevation 2750 m
    • Breakfast not included
    • Lunch not included
    • Dinner not included

    Starting from Servoz, we will embark on a beautiful 40km trek with nearly 3100m of elevation gain! A crossing of an incredible mountain range with no less than two nature reserves to traverse.


    We will arrive at Buet station to catch the train so that you can arrive at your vehicle located at Servoz station.

    Day 1

Accommodation

🏔️ Mountain refuge - Day 2
  • 🏔️ Mountain refuge - Day 2
  • 🏔️ Mountain refuge - Day 2
  • 🏔️ Mountain refuge - Day 2
🏔️ Mountain refuge - Day 2

Welcome to a true mountain refuge! Authentic, unique, and located above a glacier, this night in a mountain refuge will undoubtedly leave you with a lifelong memory!

Access

Departure
Gare de Servoz, Les Houches, France
Day 1 : 06h30
End of stay
Gare de Servoz, Les Houches, France
Day 3 - 16h00
  1. The return from day 1 will be by train, returning to Servoz station.
  2. The return for day 3 will be at the same location as the starting area for day 2 (namely the Chavants car park in Les Houches).

Go to the starting point

Access by train
Take the train togare de servozOr

We will take the train back to our starting point (Servoz station) on Day 1. The cost of the return journey is at your expense.

Access by car
Travel to the place of stay with parking available
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Bonus: You can also let us know the date that interests you and we will do our best to offer it to you!

Price details

The price includes

  1. Supervision by a mountain professional,
  2. an overnight stay in a mountain refuge including dinner, breakfast and a packed lunch on day 2,
  3. a tasting of TH-area.

The price does not include

  1. Day 1 Picnic

Options

  1. Flex fare and insurance

Practical information

Specific formalities

Specifics

Before your departure, check with the embassy or consulate regarding the entry and stay requirements for your destination country. You can also find this information on the France Diplomatie website ( https://www.diplomatie.gouv.fr/fr/dossiers-pays/ ).


In the case of flights with stopovers operated by different airlines, also check the entry requirements of the countries you are transiting through.

It is your responsibility to ensure you are in compliance, particularly regarding the validity of your identity documents (for example, some countries require your passport to be valid for at least six months after your return) , visa requirements, necessary vaccinations, and health recommendations. And don't forget to consider any customs restrictions and other potential requirements of your destination or transit country.


ℹ️ Information may change up to the departure date, remember to regularly check official websites.

Equipment

Equipment to bring

  1. Ultra trail running bag with a whistle
  2. Survival blanket
  3. Meat bag
  4. Water bottles (2L capacity)
  5. Energy bars/fruit compotes/ + have something savory
  6. Front load
  7. Phone charged
  8. Having Corentin's number registered
  9. Trail shoes NOT worn
  10. Identity card and health insurance card
  11. Fill out the provided medical form and put it in your trail running bag.
  12. Trail running poles are recommended but not mandatory.
  13. Sunglasses are recommended but not required
  14. Bring cash if you plan to buy drinks at the refuge.
  15. Bring a picnic lunch for the first day.

Clothing to bring

  1. Gore-Tex type windproof and rainproof jacket
  2. knee-high socks (to avoid getting burned if there's snow)
  3. technical warm sweater
  4. technical trousers (trail running jogging type)
  5. change of clothes
  6. Wear clothing suitable for the conditions on D-Day
R
Decathlon Travel Partner

Our partner team

5/5 (1 reviews) • 13 stays
Driven by a vision of sport that transcends mere performance, our expert partner offers a total immersion in the heart of the trail running spirit. The establishment distinguishes itself through its approach, favoring wild spots and secluded mountain corners, where the wonder of nature becomes the driving force behind progress. Led by an athlete from Team Trail UYN and coached by the legendary Sébastien Chaigneau, the agency provides top-level expertise to runners of all levels.
Discover their team and their trips
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