The MB Ultra Somfy is the flagship race of the event! Much more than a race, it’s above all a challenge against oneself… The grail for every participant taking part in the race is to become Finisher of the 140 km, the queen distance! And of the 1,500 participants taking part, only a few will succeed…
The course is divided into three distances: 70 km & 3,000 m elevation gain | 100 km & 5,000 m elevation gain | 140 km & 7,000 m elevation gain. After a joint start, riders can decide in due course whether to stop or continue to the final distance, joining the coveted Finisher’s Circle of the world’s toughest mountain bike race.
The event has also been awarded the UCI XCM Hors Classe label for the 70km distance for both men and women.
NEW: A new challenge awaits you! Combine MB Ultra and MB Explore to win exclusive gifts. To find out more about this new challenge, click here.
La course est complète mais vous pouvez vous inscrire sur la liste d’attente, des places peuvent se libérer !
Saturday, July 4, 2026
72,4 km : Megève
105,4 km : Combloux
141,9 km : Megève
Friday, July 3 - 6pm
Parking du Palais des Sports - Megève
The race is a UCI Hors Classe event, covering a distance of 70 km for both men and women.
The GPS coordinates for the zones will be sent to you by email before the race.
FEED ZONE – Sous Col du Jaillet
Pedestrian access
FEED ZONE & TECH ZONE – La Giettaz
Road access
FEED ZONE & TECH ZONE – Praz-sur-Arly
Accès routier
6h00 : Megève
Friday, July 3 - 6pm
Parking du Palais des Sports - Megève
Praz sur Arly - 42.8 km - 11:30 a.m.
Megève - 72.4 km - 2:00 p.m.
Combloux - 105.4 km - 4:30 p.m.
Sous Col du Jaillet - 73.5 miles - 6:00 p.m.
Ball Trap - 82.2 miles - 8:00 p.m.
All runners must reach their starting area by 5.50 a.m., i.e. 10 minutes before the first start. Access to the airlocks will be from the rear. An explanatory email will be sent to participants.
70 km : Megève
100 km : Combloux
140 km : Megève
Friday, July 3 - 2 to 5 p.m.
€89 + fees
This year, the race is limited to 1,000 participants to ensure smoother traffic flow on the trails.
This year, the 3 distances (70-100-140km) are used for the MTB Alpine Cup ranking, with points awarded according to the distance covered.
To help you prepare, we have compiled the times taken by finishers of the 140 km race in 2025 at various points along the route.
Km route 2026 | locations 2026 | First passage of participants finishing the 140 km race in 2025 (starting at 6:00 a.m.) | Last passage of participants finishing the 140 km race in 2025 (starting at 6:00 a.m.) | Time barrier 2026 (departure at 6:00 a.m.) |
|---|---|---|---|---|
15,2 | Sous Col du Jaillet | 6H48 | 7H29 | |
27,6 | La Giettaz | 7H27 | 8H51 | |
42,80 | Praz sur Arly | 8H18 | 10h17 | 11:30am |
52,60 | Refuge du Petit Tetras | 8h59 | 11h33 | |
60,60 | Col de Very | 9h31 | 12H27 | |
72,20 | Megève | 9h55 | 13h20 | 2pm |
84,60 | Plateau de la Croix | 10h35 | 14h18 | |
93,30 | Avenaz du Mt D’Arbois | 11h10 | 15h28 | |
105,20 | Combloux | 11h41 | 4:30pm | 4:30pm |
115,3 | Col du Jaillet | 12h35 | 6:00 pm | 6:00 pm |
121,8 | Mouille Rose | 13H05 | 19H01 | |
132,20 | Parking Ball Trap | 13h51 | 20h45 [Accord avec PC Course] | 8:00pm |
141,80 | Megève | 14h23 | 21h30 |
Come and check out the 2026 MB Ultra Somfy route to best prepare for your MB Finisher goal!
We propose to accompany you step by step in your preparation by tackling different themes which will play key roles in the achievement of your objectives. Training plan, physical and mental preparation, nutrition, recovery, effort management, equipment and much more will be part of the MB Camp program.
MB CAMP – June 6 & 7, 2026
And to give you the best chance of success, we’ve put together all the advice you need to tackle a challenge like the MB Ultra Somfy!
We know that it’s sometimes complicated to prepare training on your own, or to know how to approach nutrition. A number of factors can play a decisive role on race day.
Find all our advice below
Chaque personne, souhaitant s’engager sur la course MB Ultra Somfy, doit obligatoirement avoir lu attentivement le règlement. En s’inscrivant à cette épreuve, chaque concurrent certifie avoir pris connaissance du règlement et s’engage à le respecter.
Tous les participants non-licenciés devront obligatoirement présenter à l’organisation un certificat médical de non contre-indication à la pratique du VTT en compétition.
Nous confions cette année la gestion des documents justificatifs à Dokeop. Cliquez dessous pour connaitre la procédure de dépôts et les obligations des documents justificatifs.
Tous les participants licenciés devront obligatoirement présenter leur licence 2026 à l’organisation. Il est impératif que la licence soit en cours de validité le jour de la course et porte les mentions « certificat médical validé » et « cyclisme », notamment pour les licences FSGT ou UFOLEP.
Nous confions cette année la gestion des documents justificatifs à Dokeop. Cliquez dessous pour connaitre la procédure de dépôts et les obligations des documents justificatifs.
The MB Ultra Somfy is open to all, non-licensed, FFC/UCI licensed, FSGT, FFTRI, UFOLEP. Categories are as follows:
ESPOIRS (M & F) 19 to 22 years old
SENIORS (M & F) 23 to 29 years old
Master 1 (M & F) 30 to 39 years old
Master 2 (M & F) 40 to 49 years old
Master 3 (M & F) 50 years old and over
Age as at 31 December 2026
For safety reasons, all runners taking part in the MB Ultra Somfy must carry the following with them throughout the course:
A lighting kit is recommended for participants taking part in the 140 km race.
