Crazy? It really is crazy! 🤪
In July , you have an appointment in the mystical town of Morzine 🧟. "Mystical? Morzine? I thought it was an idyllic ski resort? 🤔". It is! But in 1857, a mysterious illness struck the village’s young women: convulsions, hallucinations and scenes of hysteria—people spoke of women "possessed by the devil" 😮. The doctors of the time couldn’t identify the cause of this event, but one hypothesis points to the infamous cursed bread of the era (we’ll grant you, it’s pretty wild 🥖). Don’t worry—the only convulsions you’ll experience will be those of your quads during MDS Morzine Avoriaz🦵, in the heart of Haute-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’re sharp, 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 coming to altitude for a challenge where you run, you walk, you stop to wolf down a slice of reblochon, and you head off again under a breathtaking starry sky 🌌.
If you love skiing and the mountains, you probably know the Portes du Soleil resort area, which offers a huge playground 😍. You’ll run between Morzine and Avoriaz in a truly magnificent alpine setting 🌄. The effort almost becomes secondary compared to the beauty of the show 🤩. But the real magic of Crazy Loops is its supportive and inclusive soul 🫂. You share the trail with Para sport teams, which means you can help them, accompany them, and even help them get up a climb 🥵. On a steeper section, 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 😍. Another bit of good news: our four-legged friends are welcome in the race 🐕. Between two loops, the race village becomes the beating heart of the party—you’ll form unique bonds to make it to the end of the adventure 👯♀️. To live the experience to the fullest, you have two options: the bivouac offer with two nights in an MDS tent, or the self-sufficient offer if you’d rather bring your own tent or book accommodation 🏠. Whether you choose to sleep under the stars or get cozy after your feats, the vibe will remain festive, alpine, and decidedly laid-back 🧘. You run, you walk, you push yourself to the limit, you lift others up, 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 there, make the most of Avoriaz! It’s the only resort accessible only on foot: you go up by gondola, and then, 0 cars...only horse-drawn carriages like in the good old days 🐎. Take the opportunity to admire the famous organic architecture of this village, designed to blend perfectly into the landscape 🪵. The building “les Hauts-Forts 2” has even been listed as a historic monument—nothing less 👏. If your joints are crying mercy, you can also try natural cryotherapy 🥶 by dipping your feet into 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 bites of crozets and a diot sausage in white wine, don’t forget to dunk your bread into a generous fondue —even in the middle of summer, it goes down just fine! 🫕
Ready to run yourself ragged? 😵💫 Don’t loop past this event!
You have 24 hours to complete as many loops as possible, at your own pace! 🤗 One loop is between 3 and 5 km 🔄.
Friday, July 24, 2026:
Arrival on site and camp set-up
Welcome & technical checks (technical checks will start as soon as the first participants arrive at camp)
Discover the Crazy Loop
Gear test
Saturday, July 25, 2026:
Final preparations
Official race start
3, 6, 9, 12 or 24 hours of running on the Crazy Loop
Sunday, July 26, 2026:
Arrival of the last teams
End of the race
Awards ceremony
Departure at your convenience back to the resort or home
Exact times will be shared closer to the event.
No, it’s not required, but the organizers will ask you to complete a detailed health questionnaire.
The organizers will provide water for every participant. You’re responsible for your own food throughout the weekend.
Yes—here it is:
Each participant must carry the gear they need for their run, depending on their pace and the weather.
In case of extreme heat: cap, sunglasses, sunscreen, bottle or soft flask.
In cold conditions or at night: a warm layer, a headlamp with spare batteries, light gloves, and a windproof jacket are strongly recommended. Temperatures can drop quickly after sunset, especially at altitude.
Mandatory gear:
• A pair of trail-running shoes
• A rain jacket
• A second warm layer
• A pair of sunglasses
• Sunscreen
• A headlamp (must be switched on as soon as night falls) + a full spare set of batteries or a battery pack
• An emergency blanket
• A whistle
• 5 safety pins
• A fully charged mobile phone
• A small first-aid kit
• A bottle or soft flask (minimum 500 ml)
• An ID document
• Euros (cash)
For the night (bivouac option):
• A sleeping bag
Your registration includes:
Race bib for the adventure
3, 6, 9, 12 or 24 hours of running
Access to the bivouac camp
An MDS Crazy Loops – Rain tent (if you choose the bivouac package)
Timing chip
Organizational support and medical coverage during the race
Bag drop for personal belongings
Awards ceremony
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