Departure from the hamlet of Le Bourget.
(S/E) The trail starts at the end of a small street (Chemin du Bourget). The street gives way to a path that climbs towards the north-east. It starts off steeply, running alongside meadows and woods.
(1) At the first intersection, take the path that branches off to the left and runs along the cliff. Turn left to reach the Belvédère des Maquisards viewpoint.
(2) Retrace your steps and take the path on the left marked "Col de Tençon". The path is well marked through the woods and is often lined with a wooden railing. About 200 metres further on, continue climbing to the right.
(3) At the crossroads after passing the ruins, continue along the path that climbs steeply to the left. Follow the path marked with a yellow line and leave a very steep path on the right (yellow cross). Pass Col de Tençon (628m) and follow the track for about a hundred metres.
(4) Take the path on the left, signposted "Bois de Ratz". The slope is steep on a long straight stretch. Descend briefly before climbing steeply through the box trees. Follow a few hairpin bends uphill to reach a wooded plateau. The slope becomes gentler.
(5) At a place called Grands Bois, turn left onto the path towards Roche Brune (the sign indicates 800m). Head south-west then south to the summit.
(6) Return via the same route to reach the hamlet (S/E).