The road to your own record
Picture the course in advance
and find the pace that fits you.

The city you want to run becomes your next trip.
THE DREAM
This trail festival traverses the world’s largest ski domain, Les 3 Vallées, in summer.
The flagship 165 km ultra gains 12,000 m—more than UTMB—and starts on Thursday night in Moûtiers before crossing seven resorts.
The inaugural 2026 edition drew 1,767 runners from 14 countries, establishing a new major event in the Tarentaise Valley.
Picture the course in advance
and find the pace that fits you.
Streets lined with cheers, runners all around.
You'll be part of that scene.
Take it slow with the finish still in you,
and meet the city all over again.
From the joy of finishing to the tough moments — read what runners wrote themselves.
No runner reports yet. We'll add them here as they come in.
Preview the course and read what runners who went before you wrote.
Outdoor 01 Event · Full recap
This may be from a past edition. Check the organizer for this year's course and operations.
YOUR ENTRY
Here are the ways to enter and what each requires.
Check the organizer's page for whether entries are open.
subject to change — verify officially
Organizer's pagesubject to change — verify officially
Organizer's pagesubject to change — verify officially
Organizer's pagesubject to change — verify officially
Organizer's pagesubject to change — verify officially
Organizer's pagesubject to change — verify officially
Organizer's pageRACE WEEK
Know the course and time limit, and race day comes into focus.
From the 2026 editionWe have not confirmed the start line coordinates yet. The map shows the host city.
There are six distances.
Ultra des 3 Vallées (165 km·+12,000 m, starting in Moûtiers, with an eight-person relay),
Odyssée de Caron (110 km·+5,880 m, starting at Cime Caron), Défi de la Masse (70 km·+3,300 m, starting in Les Menuires),
Marathon des 3 Vallées (50 km·+2,624 m, starting in Saint-Martin-de-Belleville),
Balcon de Saint-Jean (25 km·+1,150 m) and Étoilée des Thermes (10 km·+818 m, starting in Brides-les-Bains).
The event runs over four days from Thursday to Sunday and is also an official qualifying event for France’s ULTRA League.
Not yet confirmed in the official race guide
Pick up your bib, check your wave.
So on race morning, you can just run.
Confirmed via official site: race takes place in the Tarentaise valley/Three Valleys ski area, Savoie (French Alps) — courses pass through Brides-les-Bains, Méribel, Courchevel, Val Thorens, Les Menuires, Orelle, and the Belleville valleys, converging at Moûtiers for the finish. No train station (gare) information is stated on the official site.
Mountain/rural Alpine venue where limited public transit is expected, but no reliable specific transit detail could be confirmed in this research pass.
Finish at Moûtiers town center (historic heart of Tarentaise), per official site.
Official site's "Coureurs" section references a "Navettes" (shuttle) feature, but the specific shuttle text retrieved during this research referenced towns near Saint-Tropez (~250km away) — geographically inconsistent with this race's Savoie/Tarentaise location. Flagged as unreliable/likely mismatched content rather than reported as fact.
Moutiers is an Alpine venue in Savoie reached by SNCF TER trains from Chambery or Albertville rather than any city transit card. Local ski-resort shuttle buses serve the surrounding valleys and are often free or included with a lift pass in winter season.
Your start time, fuel and bag drop.
Know them ahead and the run feels easier.
The base camp at Moûtiers is the cut-off point town in the Tarentaise Valley,
with direct TGV service from Paris and Moûtiers–Salins–Brides-les-Bains station in town.
Travel to the individual starts in Les Menuires, Saint-Martin-de-Belleville and Brides-les-Bains by valley bus or event shuttle.
Registration is online only through the official website.
Because of the high-altitude course, carefully check the mandatory equipment list for your event.
Even in late July, temperatures can drop sharply on the ridgelines, so windproof and warm layers are essential.
Times are local to Moutiers. Check the latest official information before the race.
STAY A LITTLE
From a hotel that makes race morning easy,
to the meals and views you'll enjoy with the medal on.
Chalet · 2.7km
View on Booking.com€71
View on Klook€73
View on Klook€55
View on KlookAccommodation · 203m
View on Booking.com€51
View on GetYourGuide€107
View on GetYourGuideDistances are straight-line from the start.
Check real travel times and booking terms with each hotel.
Chalet · 2.7km
View on Booking.comAccommodation · 203m
View on Booking.comAccommodation · 2.9km
View on Booking.comAccommodation · 4.2km
View on Booking.comAccommodation · 240m
View on Booking.comAccommodation · 3.6km
View on Booking.comAccommodation · 23m
View on Booking.comSwipe sideways to see more hotels.
Rest a little, wander a little.
Pick what suits you and whoever you're with.
€71
View on Klook€51
View on GetYourGuide€163
View on Klook€14
View on Klook€37
View on Klook€48
View on Klook€125
View on Klook€31
View on Klook€128
View on Klook€99
View on Klook€64
View on Klook€23
View on Klook€23
View on Klook€156
View on Klook€84
View on GetYourGuide€172
View on Klook€138
View on Klook€57
View on GetYourGuide€238
View on Klook€38
View on GetYourGuide€43
View on GetYourGuide€433
View on Klook€11
View on Klook€218
View on GetYourGuide€6
View on Klook€83
View on GetYourGuide€36
View on GetYourGuide€38
View on Klook€219
View on Klook€80
View on KlookA meal before the race, a dinner to celebrate the finish.
€73
View on Klook€107
View on GetYourGuide€294
View on Klook€191
View on Klook€549
View on Klook€277
View on GetYourGuide€204
View on GetYourGuideThe city you ran — this time, a little slower.
€55
View on Klook€1,097
View on Klook€254
View on GetYourGuide€270
View on Klook€195
View on Klook€96
View on Klook€92
View on KlookOnce saved, you can open this page without an internet connection
Be the first runner
Leave this room's first post
Not officially announced yet.
It's expected in July 2027;
the 2026 race was held on Thu, July 30, 2026.
Not announced yet. The 2026 race entry fee was about €32.
Marathon · Ultra. (From the 2026 edition)
There are six distances.
Ultra des 3 Vallées (165 km·+12,000 m, starting in Moûtiers, with an eight-person relay), Odyssée de Caron (110 km·+5,880 m, starting at Cime Caron),
Défi de la Masse (70 km·+3,300 m, starting in Les Menuires), Marathon des 3 Vallées (50 km·+2,624 m, starting in Saint-Martin-de-Belleville),…