The longest course, at the edge of ultra distance. A 6:00 headlamp start, Mont-Crosin, down to St-Imier and Villeret on the Sentier du Sergent, then up to the Chasseral through the Combe-Grède. Down to Nods, over the Mont-Sujet to Lamboing, and back up by the Sentier des Statues and the Prés-d'Orvin. After Cortébert, a last steep climb to the Bise de Corgémont, then down to Tramelan.

The finest spots of the Bernese Jura in a single course, hence the name. Start at 8:00. The Mont-Crosin wind farm, the descent to Villeret and the climb to the Chasseral through the heart of the Combe-Grède. On a clear day, the descent towards the Place Centrale opens onto the three lakes and the Alps. After Cortébert, one last steep climb before the finish in Tramelan.

The L'Essentielle route without the climb to the Chasseral. Start at 9:00. A climb to the ridge, across the Mont-Crosin wind farm and a steep descent to Villeret. A rolling path then follows the river to Cortébert, before a short, steep climb back to the ridge and the descent to Tramelan.

Open to everyone, the course to get into trail running. Start at 10:00. Short but punchy: a climb to the ski club chalet and the ridge, a descent halfway down the St-Imier valley, then a climb above Cortébert. The last five kilometres are almost all downhill to Tramelan.