Race certified by Finishers: event approved by the organizer

MDS Crazy Loops La Rosière 2026

Next event date confirmed
Book now
Photo credits: MDS Crazy Loops La Rosière

The event in a few words

Samantha Loops ! 🤭

Get your calves ready and your best smile, because in addition to Courchevel or Courmayeur, the crazy MDS Crazy Loops concept is landing in La Rosière in July for an edition that’s already shaping up to be legendary in the heart of Savoie 🤩. The goal is as simple as it is addictive: you have 3, 6, 9, 12 or 24 hours to rack up as many loops as possible on a 3 to 5 km📍 course. If you’ve got good powers of deduction, you’ll recognize the backyard concept 🔄, except you’re not forced to head back out every hour 🕘. Basically, it’s the pure DNA of the Marathon des Sables popping up at 1,850 m altitude for a challenge where you run, you walk, you stop to wolf down a slice of Beaufort, and then you set off again under a breathtaking starry sky 🌌.

If you like skiing and the mountains, you probably know the resort of La Rosière, which offers a huge playground 😍. Running facing Mont Pourri (promise, it’s beautiful 😌) with Italy as your next-door neighbor means treating yourself to a timeless break between vertiginous ridgelines and sunlit alpine pastures 🐑, where the effort almost becomes secondary to the beauty of the show 🤩. But the real magic of the Crazy Loops is its supportive and inclusive 🫂 spirit. You share the trail with Para sport teams, which means you’ll be able to help them, accompany them, and even help them get up a climb 🥵. On a steeper section, in a technical descent, or just for the joy of sharing, you can, at any time, join a Para team and help them 💪. That’s the beauty of sport 😍. Between loops, the race village becomes the beating heart of the party, and you’ll create unique bonds to make it to the end of the adventure 👯‍♀️. To live the experience to the fullest, you’ve got two options: the bivouac offer with two nights under an MDS tent, or the self-sufficient option if you’d rather bring your own tent or book accommodation 🏠. Whether you choose to sleep under the stars or to get cozy after your feats, the vibe will stay festive, alpine, and resolutely laid-back 🧘. You run, you walk, you push yourself to the limit, you pull others upward, you stop… and you set off again until exhaustion 🥱.

Once you’ve completed your 42nd loop (or your 2nd—it’s up to you 😌) and your calves are begging for a break, the adventure continues 💥. Since you’re already perched up in La Rosière, take advantage of the fact your legs still work (a little) to go say hello to our transalpine neighbors ↔️. The resort is connected to the Petit Saint-Bernard pass: it’s the perfect chance to cross the border and devour a real Italian pizza or a bombardino 🍹. If your joints are crying for mercy, you can also try natural cryo 🥶 by dipping your feet in an icy alpine stream. It’s local, it’s free, and it’s brutally effective at putting out the fire smoldering in your shoes 🔥. And between two slices of Savoie ham and a diot sausage in white wine, don’t forget to dunk your bread in a generous fondue—even in the middle of summer, it goes down just fine! 🫕

Ready to run yourself ragged? 😵‍💫 Don’t loop this event!

4 reasons to join this race

The concept 🔄
It’s absolute freedom! You manage your effort however you like for 3, 6, 9, 12 or 24 hours 😍. A 3 to 5 km loop, to do twice for fun or twenty times for the challenge. You decide when you stop to dance and when you get back into the fight 👊. You hold all the cards—your move 🥵.
Sharing the effort over several days ⛺️
You’ll spend two nights in a base camp alongside your fellow adventurers 👯‍♀️. You share your strides, your doubts, and your belly laughs with strangers who quickly become your best allies (or rivals 😈). It’s this repeated effort over several days that turns a simple athletic performance into an unforgettable memory 💪. It’s the perfect chance to disconnect from everyday life and reconnect with what matters: the joy of moving forward together.
An inclusive and supportive adventure 🫂
MDS Crazy Loops lets you become a Helping Runner to give meaning back to your stride ♿. Sharing the course with Para teams and helping each other on steep sections creates a unique bond you won’t find anywhere else in competition. Those are the great values of sport, right? ❤️
Mind-blowing panoramas ⛰️
Running at 1,850 m altitude gives you a breathtaking view of the surrounding peaks. It’s the ideal spot to fill up your memory bank with Savoy landscapes that look like they came straight out of the movie Heidi 🤩.

A distance for every taste

24h : Crazy Loops 24h Self-Supported

TrailThe most popular
  • 17 Fri ➜ July 19, 2026

A few more words

You have 24 hours to complete as many loops as possible, at your own pace! 🤗 One loop is between 3 and 5 km 🔄.

Frequently asked questions (FAQ)

Friday, July 17, 2026:

  • Arrival on site and set-up at the bivouac

  • Welcome & technical checks Technical checks will start as soon as the first participants arrive at the bivouac, i.e. from 2:00 p.m.

  • Discovering the Crazy Loop

  • Gear test

Saturday, July 18, 2026:

  • Final preparations

  • Official race start

  •  3, 6, 9, 12 or 24 hours of racing on the Crazy Loop

Sunday, July 19, 2026:

  • Arrival of the last teams

  • End of the race

  • Awards ceremony

  • Free return to the resort or home

The exact times will be shared as the event approaches.

No, it’s not mandatory, but the organization will ask you to fill out a medical questionnaire.

The organization provides water supplies for each participant. You are responsible for your own food throughout the weekend.

Yes, here it is:

Each participant carries the gear necessary for their race, depending on their pace and the weather.

  • In case of a heatwave: cap, sunglasses, sunscreen, water bottle or flask.

  • In case of cold or at night: a warm layer, a headlamp with spare batteries, light gloves, and a windproof jacket are strongly recommended. Temperatures can drop quickly once the sun goes down, especially at altitude.

Basic kit:

  • Water bottle or flask – minimum 500 ml capacity

  • Clothing suited to weather conditions

  • Fully charged mobile phone

  • Small first-aid kit (bandages, elastic wrap…)

  • Emergency blanket

  • Whistle

  • A headlamp (must be switched on as soon as night falls) + 1 complete set of spare batteries or a spare battery pack

  • ID

  • Sleeping bag if you sleep at the bivouac

  • Sleeping pad – optional

Your registration includes:

  • Race bib for the adventure

  • 3, 6, 9, 12 or 24 hours of racing

  • Access to the bivouac

  • An MDS Crazy Loops tent – Rain (if you choose the bivouac offer)

  • Timing chip

  • Organizational and medical support during the race

  • Bag drop provided for personal belongings

  • Awards ceremony

You can check the race rules here

Focus

MDS Crazy Loops La Rosière
MDS Crazy Loops La Rosière
MDS Crazy Loops La Rosière
MDS Crazy Loops La Rosière
MDS Crazy Loops La Rosière