When arriving in Messimy from the east, leave your car in the village, in one of the small car parks on Avenue des Alpes, for example.
Please note! This route is not signposted.
(S/E) Head west and turn left onto Rue Simon Rousseau, then right onto Rue du Vingtain. Pass the church and turn left onto Rue Froide. Immediately after, turn right onto Chemin du Chater. Continue straight on this path to leave the village. The path continues through the fields. Pass under a high-voltage power line and arrive at a crossroads.
(1) Continue straight ahead onto Chemin de Janton. Pass a few houses, then take the first path on the left.
(2) At the next junction, turn right, then at the crossroads 150m further on, continue straight ahead, leaving the hamlet of Jaricot on your left. Continue along this path, through the forest or along the edge of the forest, until you come out onto a road.
(3) Follow the road to the right. At the next crossroads, continue to the left.
(4) About 200m further on, take a path that branches off to the left and leads uphill. The path curves to the right and heads west. Continue through the undergrowth, ignoring a path branching off to the left, then reach a crossroads of several paths marked with a cross, near a road. Continue straight on to join the road.
(5) Follow the road to the left to reach Châteauvieux.
(6) Pass the Chateauvieux spring, keep right until you reach the church and its two beautiful lime trees. Then turn left onto the road (not the path) and go straight on at the junction, taking the first path on the right, alongside a farm.
(7) At the three-way junction, head up the left-hand path to reach the Crêt de Py-Froid and its viewpoint over the Monts du Lyonnais.
(8) Continue along the path opposite and go straight on at the following junctions. You’ll come to a small tarmac road on the outskirts of Yseron.
(9) Carry on straight ahead. At the crossroads, go straight ahead and then turn left at the next junction onto Chemin du Planil.
(10) At the junction marked with a cross, turn right onto Montée de la Chazière. You’ll come out onto Grande Rue; cross the road and take the path opposite. Shortly afterwards, this path bends to the right to join a road. Take this road to the right. At the first junction, turn onto the small road to the left. Further on, when this road takes a hairpin bend to the right, near a house, continue straight on along the path which leads to the waterfall.
(11) Cross the Yzeron and continue along the path on the other side. Shortly afterwards, ignore a path branching off to the left and continue to the right. Keep following this path until you reach a wider track.
(12) Take this path to the right. Further on, cross the Yzeron again before reaching a road.
(13) Follow this road to the left, then take the first road on the right to reach the hamlet of Le Giraud.
(14) Cross this hamlet by following the road as it bends to the right. Do not continue to the end of the tarmac road but take a path on the left that runs alongside a somewhat overgrown garden. Continue straight on along this path, which crosses the Bois du Faix.
(15) Further on, you’ll find a path branching off to the right, leading to a dolmen amidst a rocky outcrop. A round trip.
(15) Back at the junction, continue to the right to reach a small tarmac road on the outskirts of Saint-Laurent-de-Vaux. Continue to the next junction.
(16) Take the second road on the right. Follow it round the bend and then, immediately afterwards, turn right onto a track. Continue along this track through the Bois de Taconan until you reach another track opposite a field.
(17) Continue to the left to reach a road. Follow it for a few metres to the left, then take the path opposite to cut across the bend and come out opposite the orientation table. Follow the road to the left for a few metres.
(18) Turn right onto a path. Further on, leave the woods behind the Chatanay farm and ignore a footpath and then a path on the left leading back to the farm. Continue straight on until you come out onto a small road.
(19) Walk a few steps to the right along the road, then take the path on the right. Further on, at Château du Montus, continue along the road; then, when it begins to curve to the left, carry on straight ahead along a path. Continue straight ahead along this path until you reach a junction, just beneath the high-voltage power line, with a wide path and a farm track (see alternative route in “Practical Information”).
(20) Continue to the right along the Chemin des Vignes until you reach the hamlet of Basse-Bruyère and come out onto the road that runs through the hamlet, opposite a beautiful house.
(21) Take this road to the left, then take the first small road on the left, the Chemin de la Flache. Pass under the high-voltage line again and continue straight on until you reach a road.
(22) Follow it to the right around the bend, then straight on to the village of Messimy (S/E).

It might have been easier to cut straight across from point 18 to the return point, as the detour wasn't particularly interesting.