Starting point: Gasseau car park in Saint-Léonard-des-Bois. Yellow markings
(S/E) From the car park, go to the picnic area on the other side of the road leading down to the Domaine du Gasseau. Turn left (south-west) along the safe path alongside the D146. At the end of the safe path, follow the pavement to La Roirie.
(1) At the entrance to the bridge, go down the steps on your left and walk along the Sarthe on your right. Before the road, turn away from the river and climb up to the left.
(2) Just before the road (chapel), turn left at an acute angle and climb through undergrowth and then to the edge of the forest.
(3) At the crossroads, turn slightly left onto a path that runs parallel to a wider track and leads to the Haut Fourché viewpoint.
(4) Continue along the other side (north-north-west) and, when you find the track on the right, turn left (west) downhill. Before leaving the wood, turn right. Turn left and then right.
(5) Cross the D146 and, as soon as you enter the car park, take the path rising to the right. Head east then north-east, ignoring the paths on your left.
(6) At the crossroads, turn right onto the gravel path. Go past La Chênaie and join the D146. Follow the road to the right. At the entrance to the wood on your left, take the track on the left. Ignore a track on the right. At the end of the wood, take the road on the left.
(7) After Les Gonteries, take the 1st track on the left. Then turn left onto the track and head north as far as La Touzelière.
(8) Cross the D146 and continue along the track opposite. Go straight down to Saint-Céneri-le-Gérei (steep gradient), paying no attention to the paths coming from either side. The path leads to a road. Turn left and cross the Romanesque bridge over the Sarthe (you are now entering the Orne département).
(9) At the top, in the heart of the village, turn left and walk up to the church, following the panorama around the church and cemetery to the left. At the corner of the cemetery, turn left to go down to the chapel.
(10) At the chapel, turn right and follow the River Sarthe on your left. At the car park, head back up towards the village and make a right-left turn to reach the heart of the village.
(9) With your back to the inn, cross the D101 and take the Chemin du Donjon opposite (to the right of the house with green shutters on the corner). At the top, turn left and immediately right after the calvary onto Chemin de la Barre. Turn right onto the D535, Route de Saint-Pierre-des-Nids.
(11) Before the bridge over the Sarthon, follow the track to the right, then turn left to cross the footbridge. Continue straight ahead until you reach the junction with the D535. Cross the road to reach the Trotté site along the Sarthe (on your left).
(12) Take the footbridge over the Sarthe. Turn left and walk up the meadow.
(13) Take the track on the right. At the top (hill 156), turn right and follow the GR®36(red and white markings).
(14) At the next crossroads, turn left and then immediately right. At the next crossroads (marker 160), ignore the path leading off to the left (south) and descend towards the bank of the Sarthe (be careful, this is a difficult descent). Follow the river on your right and reach the Bac à Chaine footbridge.
(15) Continue as far as Le Val and, at the crossroads, go straight on (south) and, after the houses, take the path leading down to the right to join the river. Follow the river on your right. Note the interpretation panels (Sentier de la Libellule).
(16) Follow the road to the right. Drive up to Le Gasseau and reach the car park (S/E).
For those who love discovering a little-known region, I recommend hiking in