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Saturday 25 September 2027 · Tramelan
L'Essentielle
The most beautiful sites of the Bernese Jura in 45 km, hence its name. The Mont-Crosin wind farm, the climb to Chasseral via the Combe-Grède and, in good weather, the view of the three lakes and the Alps.
The course
What awaits you
You'll pass through
A course that packs in the finest spots of the Jura bernois, hence its name.
A distance close to a marathon, in the heart of nature, and with added elevation gain: good preparation is essential. You climb to the ridge, cross the Mont-Crosin wind farm, then descend to Villeret.
Then comes the climb to Chasseral through the heart of the Combe-Grède. If the weather permits, the entire region of the three lakes opens up before you, with the Alps as a backdrop, during the descent back to the Place Centrale.
You drop down to Cortébert for the last obstacle, a steep climb up to the ridge. Then it's downhill all the way to the finish.
Practical
Before the start
Start
08:00
Saturday, September 25, 2027, behind the Marelle hall, in Tramelan.
Bibs and briefing
05:45
Collection until 7:45 am at the Marelle room, with your ID. Briefing at 7:50 am.
Time limit
9 hrs
Finish by 17:00 at the latest. Cut-off times are in the split times table.
2027 entries
Not open yet
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Get notified
2 ITRA points at the finish.Race regulations and 2027 entry fees coming soon online.Mandatory kit
- Your own cupThere are no cups at the aid stations.
- Your poles, if you bring themYou keep them until the finish.
Recommended kit
- Backpack
- Water supply, at least 1 litre
- Survival blanket
- Whistle
- Elastic adhesive tape, for bandaging or strapping
- Waterproof jacket for bad mountain weather
- Small food supply (bars, gels)
- Mobile phone
The races
The other courses
66.5 km · 3'129 m D+
La Grandiose
The longest route of the Trail du Jura bernois. Start with headlamps, passing through Chasseral and the Combe-Grède.
- Distance
- 66.5 km
- Elevation gain
- 3'129 m
- Start
- 06:00
Explore the course
31 km · 1'245 m D+
La Traversée
The route of L'Essentielle, without the climb to Chasseral. The ridges, Mont-Crosin, then the river to Cortébert.
- Distance
- 31 km
- Elevation gain
- 1'245 m
- Start
- 09:00
Explore the course
13.5 km · 631 m D+
La Découverte
Open to everyone, the course to get into trail running. Short but punchy.
- Distance
- 13.5 km
- Elevation gain
- 631 m
- Start
- 10:00
Explore the course