The walk starts from the car park at the municipal campsite in the village of Chavannes-sur-Suran.
(S/E) Cross the bridge over the Suran and take the road on your left, following it to Rue des Déserts in the hamlet of Chavuissiat le Petit.
(1) Turn right onto Rue des Déserts. In the hamlet of Chavuissiat le Petit, follow the road on your left and, at the end, continue to the right as far as the last house. Carry on along the grassy path leading uphill to the left.
(2) At the junction, take the path on the left which leads downhill.
(3) At the bottom of the path, at the junction, do not follow the signposting, but carry on to the left.
(4) Follow Rue de Nivigne, cross the bridge over the Suran and reach the D42. Cross with care, and continue along the path in front of you – this is where the real challenge begins.
(5) At the junction, take the path on your left.
(6) At the fork, take the stony path on the right and follow it. From time to time, you’ll see yellow markings.
(7) Stay on the main path on the right and follow it.
(8) Continue along the path, taking time to admire the panoramic view.
(9) At the fork (signpost), take the path on the left which leads downhill.
Caution: this is a very steep and slippery section with a handrail along part of the descent.
(10) At the landmark rock, head straight on towards the fence, then turn left to follow it.
(11) At the gap in the fence, make sure you close it properly and continue to the right through the woodland. Continue southwards, following the ridge for about 3.5 km.
(12) At the junction, take the path on your left.
(13) At the double junction, with two signposts some distance apart, choose the one pointing towards the Col des Justices (at the top of the signpost) and take the small grassy path just behind it which climbs uphill.
(14) Leave the small path and turn left (be careful, it’s a steep descent). Enjoy the view of Mont Blanc if the weather is fine.
(15) At the bottom of this descent, turn right.
(16) At the fork, turn left onto the stony path, then further on, turn left again to rejoin the road. Look for the start of a path on the right at the edge of the woods.
(17) Take it to the right through the undergrowth and follow the yellow signposts.
(18) As you emerge from the woods, turn right onto the grassy path which continues as the Chemin du Bois. At the D42, continue left and then right onto the Route des Orchidées to reach the car park (S/E).
At point (9), there is a steep and slippery section: use the handrail when going up and down.