Departure from the car park in front of the Espace Jean Jaurès in Vieux-Charmont. The sign is on a post 10 metres in front of the entrance. Route No. 4 is marked by two horizontal yellow and blue lines (URV standard, see §Info).
(S/E) Turn right onto Rue de Brognard towards the temple. At the crossroads, take route No. 4 straight ahead, Rue des Sources, then turn left onto Rue des Vignoles. At the crossroads with Rue du Crépon, turn left, then take the path on the right: "no vehicles except service vehicles" which leads up a slightly steep climb for a few metres to the fort, as indicated by the route No. 4 sign. At the foot of the electricity pylon, follow the path that enters the woods. This climbs, with a hairpin bend to the left, then flattens out.
(1) Enjoy the magnificent view of the Belfort gap, Vieux-Charmont and Grand-Charmont at the end of the fence on your left. Continue along the path that turns right and climbs into the woods. Come out onto a meadow and follow the path that runs along the right-hand edge. At the sign, head towards the viewpoint on the left.
(2) At the eastern viewpoint, enjoy the view of the Savoureuse Valley, the Vosges mountains, etc. An orientation table describes the landscape. The view is clear in winter.
Optionally, you can walk the 300-metre-long caponier route, which is marked in red.
After exploring, the signpost indicates to take the path on the left. Follow the edge of the ditch to a staircase. Turn left and then right, then follow a grassy path. On the left is the southern slope of the fort overlooking the town of Sochaux. The path curves slightly to the right with a slight incline before reaching a crossroads.
(3) Take a quick look around the farmyard. To do so, go straight ahead at the crossroads, turn left onto the tarmac road, then immediately take the path between the two fences on the right. After your visit, turn around and return to the crossroads. Take route No. 4 on the right, along the grassy path. When you reach a white building with a sign pointing to "dessus des escaliers" (top of the stairs), turn left onto the stairs.
(4) At the bottom of the stairs, a sign indicates route No. 4. Turn left onto Rue Sous Lachaux. At the next intersection, turn right onto Rue de Grand-Charmont. At the crossroads with traffic lights, cross Rue de Belfort (CD 437) and continue along Rue De Gaule on the right-hand pavement for 100 m. Take the footpath on the right, cross Rue des Vergers and continue along the footpath between two buildings. Cross Rue des Graviers at the pedestrian crossing and take the footpath on the right, which runs parallel to Rue des Graviers. Cross Rue des Chênes and continue south on the footpath that crosses a playground (kiosk). Continue in the same direction towards the south, crossing Rue Georges Cuvier twice, and continue towards the Citédo car park. Cross the street that leads to the sports and shopping complex and the secondary school. You will see two footpaths in front of you; take the one on the left, which leads to Citédo.
(5) At Citédo, go around the building on the left; this path joins the La Coulée Verte cycle path. Take La Coulée Verte on the left for 800 metres. On the left, you will see the ponds (gravel pit).
(6) Walk along the right-hand side of the Savoureuse river (ducks and herons). At the bridge, turn left onto Rue de Brognard until you reach Espace Jean Jaurès. (S/E)