Start from the Notre-Dame de Lorette cemetery car park.
(S/E) Head west along the cemetery. At the corner of the cemetery, turn right.
(1) Immediately after, turn left into Chemin du Bois de Mont. Follow the GRP® (red and yellow markings) and the GR® 127 and 145 (red and white markings) from west to north-west, ignoring all side trails. Enter the forest and head west, going straight ahead at each junction.
(2) At the crossroads at cote 181, keep to the GR®145, North/West Azimuth 320°.
(3) At the crossroads, you leave the GR®°, keeping the same orientation (North/West azimuth 310°) until you reach the clearing.
(4) Follow the clearing for 60m, cross it and descend to Bouvigny-Boyeffles.
(5) Take the GR® on your left, which runs alongside the wood.
At the end, turn left into the woods. At the T-junction, turn right and follow the edge of the wood. Return to the asphalt surface at Chemin des Boisseaux.
(6) Turn left-right and follow Rue des Ferronniers. At the end, turn left-right again to take a path around the corner of the house with the grey picket fence. Follow this path, which supports the GR®, to a road. Turn left onto the D75 road.
(7) 100m into the bend, leave the D75 and join the uphill path.
At the crossroads at the end of the forest, continue straight on.
(You may choose to leave the route for a moment to reach the Bouvigny antenna at 800m and then return).
(8) Turn left into a grove. Go around it to the right and come out onto a road.
(9) Follow the road to the left. Pass the Fermes du Bois de Mont on the left and go straight ahead into the Bois de Mont.
(10) Note an oratory on the right. Continue straight ahead at the next junction. Turn right once, then left again along the path. Ignore an exit on the right and come to a T-junction.
(11) Then turn right (south) and descend a valley.
(12) At the bottom, turn left. Head east, ignoring a trailhead on the left. Leave the forest and return to the tarmac. At the crossroads, turn right into the main street of Ablain-Saint-Nazaire.
(13) Turn left into Rue de la Vallée de Chaufour. After the right-hand bend, go straight ahead and keep to the path alongside the river. At the junction (hill 93), go straight ahead. Keep away from the river, ignore an exit on the left and follow along the stadium. Turn right to bypass a second stadium on the right and rejoin the river, which you follow to the left.
(14) Continue along the same road in front of you, leaving the asphalt and taking the path alongside the river. Keep to this path along the river, cross Rue du 8 Mai and Rue du Flot without changing direction, and continue to the end.
(15) Turn left onto the main street. Take the second left at the derelict church, Rue de la Blanche Voie. At the 1st crossroads, turn right into Rue de Lens. After 70m, take the small road on the left. This becomes a footpath: continue to the end. Take the path to the right and climb 76 steps to reach the plateau de Lorette. Turn right to return to the car park (S/E).