Difficulty: Red - Difficult
Start: Tourist Office in Mons-La-Trivalle (avenue de la gare).
Car park: Behind the Tourist Office of Mons.
Description: After a passage to the chapel of La Voulte, you will reach the bridge of Tarassac. The road of the Orb gorges will serve as a warm-up. At kilometre 4, you take the road to Drouille, which has recently been rebuilt.
After Drouille, the long climb to the Courbou pass begins. The track is steep but steady. Don't worry, at the Courbou it's not over. You go straight to the Bacoulette pass. At the 620 mark, you are at the top. After a fast start, you find a monotrace, to finish with a nice descent to Ornac and Mons la Trivalle.

Discover on the way:
- Tarassac suspension bridge;
- the valley of the Orb and Jaur rivers ;
- the village of Courbou;
- passing near the Héric Gorges (possibility of swimming).