Start of the Transju Trail in the Jura Mountains

The 25 km Trail

1,250 m elevation gain
Date
Departure time
Place of departure

Les Rousses

Place of arrival

Les Rousses

20 km UTMB Transju Trails Itra Transju Trails

Rates
Until 03/29/2027 (-33%) 35€
from 30/03/2027 to 26/04/2027 (-20%) 38€
from 27/04/2027 to 29/05/2027 42€
from 30/05/2027 to 05/06/2027 subject to bib availability 48€
Group rate between 10 and 14 participants Extra 10% off per entrant
Group rate for 15 participants and more Extra 15% off per entrant
To take advantage of the group rate please send an email to contact@latransju.com
Combo 42 km + 25 km (prices vary based on the dates above) €70 - €84 - €91 - €105
Sign up

Discover the 25 km and 1,250 m elevation gain route, a diverse and demanding trail alternating technical sections, playful singletracks, and relentless climbs.

On this loop from Les Rousses, you will make your way to the village of Prémanon via the picturesque Pont Perroud. You will then push on toward the legendary summit of La Dôle, which boasts breathtaking views of Lake Geneva and the Mont-Blanc massif.

The journey back to Les Rousses takes you past the Jason Lamy Chappuis stadium—an iconic training ground for the French Nordic ski teams—before you charge across the finish line.

 

 

Practical information
  • Distance : 25 km
  • Start: Les Rousses at 8:00 AM
  • Arrival : Les Rousses
  • Elevation gain: 1,250 m D+
The services offered

INCLUDED

  • A Dynafit runner gift
  • Showers and changing rooms
  • Post-race massage service (Physio or Osteo)
  • Drop-bag storage until the finish of your race
  • Personalized race bib (guaranteed for all registrations before May 21, 2026)
  • The timing chip and the timed classification
  • A participant race photo courtesy of our partner Crédit Agricole Franche Comté (album link sent after the event)
  • Medical support and trail safety teams
  • Aid stations along the course and at the finish line
  • Access to an indoor warm-up/picnic area

OPTIONS

  • Cancellation insurance
  • Personal injury insurance
  • Exclusive merchandise from our shop
  • A traditional Franche-Comté runner's meal (can be booked during registration)
Course and profile

Courses are subject to change; routes and elevation profiles may evolve.

Withdraw my number

Bib pick-up takes place at the Salle de l'Omnibus in LES ROUSSES. 

Friday, June 4: from 2:00 PM to 8:00 PM

Saturday, June 5: from 6:30 AM

You must bring the following documents with you:

  • Your official, valid identification document
  • Proof of registration
  • Your license or medical certificate if not validated beforehand

The number will be accompanied by a timing chip. Participants must take care not to damage it. To do so, the number must be fixed without being folded on the chest or the belly and remain visible throughout the race. In case of damage to the number or the chip, preventing its detection, the participant will not be able to make a claim. The organizer will not be held responsible.

Bib pick-up by a third party is permitted, provided they present the same documents as for personal pick-up: ID of the registered runner (photo accepted), proof of registration (Health Prevention Track 'PPS' or medical certificate if not yet validated).

Starting corrals

For the 25km, start corrals are set up to guarantee a smooth, exhilarating race experience for everyone.

  • Starting corrals are assigned based on the estimated time submitted during registration and the ITRA Index.
  • The corral number is printed on your race bib and can be checked in your registration file once bib assignments are completed.
  • Corrals open 30 minutes before the start time.
  • Your race time begins the moment your corral sets off.
  • The cut-off times are calculated from the start time of the final corral.
  • Failure to start in your assigned corral will result in penalties, up to and including disqualification.
  • No requests or appeals regarding corral assignment will be accepted by the Organization. By registering, runners commit to accepting their assigned corral.
  • However, moving to a later corral (e.g. moving from Corral 1 to Corral 2, or from Corral 2 to Corral 3) can be requested directly on-site on race day. Moving to an earlier corral will not be permitted.

Start corral breakdown (8:00 AM start)

Information to come

Start times may be modified depending on weather conditions and the number of participants.

Recommended and mandatory equipment

MANDATORY EQUIPMENT

  • Water reservoir with a minimum capacity of 500 ml,
  • 1 survival blanket,
  • 1 warm, waterproof garment protecting against cold and rain,
  • 1 fully charged cell phone,
  • 1 reusable personal cup,

RECOMMENDED EQUIPMENT

  • 1 Whistle,
  • 1 basic first aid kit with dressings and foot care supplies.
  • Nutrition

AUTHORIZED GEAR

  • Poles.

FORBIDDEN GEAR

  • Two-wheeled or motorized vehicles.
    This equipment is forbidden across all races.
Refreshments

Our aid stations, lovingly prepared by our dedicated volunteer teams, will provide you with refreshments and fuel featuring local produce from our partners. 

Number: 2
Information on aid station locations and supplies coming soon…

⚠️Personal assistance is only allowed at designated aid stations, in the immediate vicinity of the refreshment zone and subject to the station marshal's discretion.

Any assistance received outside of authorized zones will result in a time penalty for the runners concerned.

Cut-off times

Prémanon: 9:30 AM
Les Dappes – Foot of La Dôle: 11:30 AM

Spectator spots

More details coming soon…

UTMB Index and ITRA points

The Organization awards elite bibs according to the following criteria:

● Free elite bib:
○ Men: ITRA performance index ≥ 820 points
○ Women: ITRA performance index ≥ 660 points

● Guaranteed paid elite bib (regardless of sold-out races):
○ Men: ITRA performance index ≥ 780 points
○ Women: ITRA performance index ≥ 625 points

Each race (excluding the 5k, 10k & 15k hike) awards ITRA points and/or a UTMB Index rating.

Athletes wishing to take advantage of these conditions must submit a request to the Organization by email to contact@latransju.com before May 20, 2027. Registration is not automatic; every athlete must complete their own entry process.

Elite bib recipients commit to attending the awards ceremony if they place among the podium finishers.

Transju' Challenge by Jura Pellets

Anyone who takes on all 3 events (La Transju’, La Transju’Trails, and La Transju’Cyclo) within the current year will receive a 10% discount on the Transju’Cyclo, whichever race distance they choose.

Corporate Challenge by Crédit Agricole

Trans’Organisation has chosen to celebrate and promote health and wellness through workplace sport by launching a dedicated challenge: The Transju’ Corporate Challenge.

This is a team challenge tailored for all coworkers of a company who want to take on any of the timed events or hikes of La Transju’. The mission: share an unforgettable, uplifting adventure that fuels team spirit.

This challenge is open to all companies, with the goal of rallying as many team members as possible.

The challenge spans all 3 events: Transju’, Transju’Trails, and Transju’Cyclo with rankings and awards for each race, crowned by an overall ranking at the end of the event season. 

View the Corporate Challenge rules. 

Race rules
La Transju'Trails

Registration for La Transju’Trails 2027 is now open!

Join us on June 5 and 6 in the Jura Mountains for an unforgettable adventure: La Transju’Trails is celebrating its 20th anniversary!

La Transju'

Registration for La Transju’ 2027 is now open!

Join us on February 13 and 14, 2027, in the heart of the Jura Mountains to write a thrilling new chapter of La Transju’!

La Transju'

La Transjurassienne evolves: a new chapter begins in 2027

A legendary event in French cross-country skiing, La Transjurassienne has always evolved alongside its wild terrain. Facing the impacts of climate change and increasingly unpredictable snow conditions over the years, we are choosing to reinvent the race to safeguard its future.