To reach the hamlet of Jouvernaisinaz, go to Orcier and, opposite the church, head towards Col du Feu. 1.2 km after leaving the village, in the middle of a right-hand bend, turn left onto the road that descends slightly to Jouvernaisinaz. Once in the hamlet, continue towards Col du Feu. Pass the fountain and continue to the old school on the right: there is a small car park just opposite.
(S/E) Head south. Turn left at the calvary onto the road that climbs uphill and, after about 50 metres, turn left again onto a small path marked by a yellow donkey painted on a small sign (you will need to follow this trail or a blue dot on the ground to Col du Feu).
(1) After about 500 metres, you will come to a small tarmac road. Follow it to the left (south). After about 100 metres, the tarmac disappears and gives way to a path that continues to climb.
(2) At the intersection, the little yellow donkey suggests going down to the right. Resist and continue climbing southwards; the donkey will reappear a little further on...
(3) Cross the D36 and take the small path that climbs opposite. The path rejoins the D36, which you should follow to the right until you reach the Col du Feu.
(4) At the pass, take the small road on the left that climbs north-northeast towards the hamlet of Le Feu (signposted). At the T-junction, turn left.
(5) After the last house, continue straight ahead on the marked path that climbs towards the chapel. After 250m, you can "cut across" by going straight ahead or continue on your left along the path, which is a little longer but less steep (remember to save your energy as there are still many contour lines to cross). Then climb up along the Way of the Cross to reach the chapel (magnificent view of Lake Geneva and the Jura).
(6) Continue on your way, passing in front of the chapel and taking the path that descends. You will always find a blue mark on the ground or white and red markings. Walk along the ridge to the north-east and reach the slightly marked summit of Mont d'Hermone.
(7) Begin the descent, still heading north-east. I would describe this descent as difficult as it requires you to stay focused and on your guard to avoid rolling on the stones.
(8) The sign for "la Montagne des Sœurs" is in the right place but is poorly oriented... In any case, continue on the left along the grassy path that descends and quickly turns into a stony path. At the next fork, continue left towards the west and you will reach a skidding yard.
(9) Continue downhill on the main path, which winds around, and ignore all the side paths.
(10) At the fork, turn left, continuing downhill.
(11) At the crossroads, follow a small road to the left. Ignore the access road to Les Chavannes on the left and continue to a three-way junction.
(12) Then turn left. At the next crossroads, turn right. At the fork shortly afterwards, go straight ahead. Continue along the road, ignoring any side roads, until you reach Jouvernaisinaz. Then turn left to return to the starting point (S/E).