The Grandiose

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H. max

max. altitude

D+

Departure

Saturday, September 26 at 6:00 a.m.
The start will be in Tramelan, behind the Marelle multipurpose hall.

Time limits and time barriers

The maximum time to reach the first aid station in Cortébert is 2 hours (08:00).
The maximum time to reach the 2nd aid station at the central square is 3 hours (09:00).
Maximum time to reach the 3rd aid station in Lamboing is 5 hours (11:00).
Maximum time to reach the 4th supply point at Chasseral is 8 hours (2:00 PM).
Maximum time to reach the 5th aid station at Mt-Crosin is 11 hours (5:00 PM).
The entire route must be completed in a maximum of 13 hours (7:00 PM).

ITRA Points

By completing the race, you will earn 3 ITRA points

Race regulations

Coming soon here

Supplies

6 aid stations. 5 full aid stations at Cortébert, at the central square, at Lamboing, at Chasseral and at Mt-Crosin and 1 aid station with only liquids at Villeret.

Fees and registration conditions

CHF 70.- from 01 to 28 February 2026.
CHF 90.- from 01.03 to 23.09.26.
CHF 105.- on site.

Bib collection and briefing

On Saturday, September 26, 2026 in Tramelan at the Salle de la Marelle between 4:30 a.m. and 5:30 a.m. with your identity document.

Briefing 5 minutes before departure, at 05:55.

Required equipment

A personal cup is required for use at aid stations.
There are no cups provided at the aid stations.
A headlamp is also mandatory.

Recommended equipment

Backpack
Water reservoir, min 1l
Survival blanket
Whistle
Adhesive elastic bandage for use in slinging or strapping
Waterproof jacket to withstand bad weather in the mountains
Second layer (long-sleeved sweater or arm warmers)
Small food reserve (bars, gels)
Mobile phone

If you choose to use poles, you must have them with you throughout the race.

La Grandiose is a demanding route for trail runners looking for challenges and sumptuous landscapes.

A course bordering on ultra-trail running awaits you with La Grandiose. The start in Tramelan, illuminated by headlamps, begins with a steep climb to the ridge and a descent to Cortébert that will immediately test your muscles.
Next, head towards Mont-Sujet and Lamboing before climbing to the summit of Chasseral. From there, the trail leads you down into the heart of the Combe-Grède valley before climbing back up the other side of the St-Imier valley to the Mont-Crosin wind farm. One last push, because in the distance, Tramelan and the finish line await.