Guidebook with maps/step-by-step
Starting point: Lower station of the Thermes lift
Take the Parc Thermal footbridge near the car parks, then turn left and walk along the Bon Nant.
At the Bois des Bains Est, turn left towards the Passerelle des Thermes.
Cross the footbridge and follow the winding path uphill towards Saint-Gervais town centre.
Once at the foot of the Saint-Gervais viaduct, take the stairs to reach the viaduct.
Cross the viaduct towards Le Châtelet. Cross over and walk past the cable car station.
Turn right and go under the county road to join the Chemin du Châtelet. Follow the path and take the Chemin de Fontaine Froide, which runs through the forest.
At La Grange du Châtelet, turn right and follow the path.
Leave the ‘La Valléenne’ mountain bike route on your left and continue down the path on the right towards the Parc Thermal.
Back at the Bois des Bains Est, turn left and head down the path you took on the way up along the Bon Nant.
Take the footbridge at the Parc Thermal and you’ll be back at the starting point.