Start from the Le Porteray picnic area on the D4.
(S/E) Head west towards the bridge and follow signs for La Planche. Then turn right. After crossing the railway level crossing, immediately take the path on the right for 1,100 m.
(1) At the crossroads, turn left to reach the Pont de Chanteloup.
(2) Do not cross the bridge, but turn left onto the dirt track running alongside the Guyoult. Keep the Guyoult on your right and continue straight on for about 2 km. Pass the hamlet of La Rivetière and continue straight on to the next crossroads.
(3) Leave the bridge on your right and continue straight ahead along a dirt track. Cross a bridge over the Cardequin and, after about 650 m, take the sharp left-hand bend onto the road.
(4) Follow this road and continue straight on for 1 km. Pass the small Marian shrine on the right and continue straight on.
(5) At the crossroads, turn right, pass the hamlet known as Les Turmeaux, and head towards the Croix de Kermeur.
(6) Cross the D78 carefully and , at the wayside cross, head straight ahead towards Hirel. At the first fork, at the hamlet of Groussay, take the left-hand path towards l'Aupinière/Gatinel. Pass through the hamlet of l'Aupinière and, after 250 m, take the grassy path on the left.
(7) Follow it to the Route de Kermeur, running alongside the stream. Turn right; at the junction with a wayside cross, turn left, cross the railway line, and reach the D4.
(8) Cross the D4 carefully, and take Rue des Rosières, slightly to the right, opposite. At the junction, turn left, and cross the bridge over the Biez de la Ceinture Nord.
(9) After the bridge, turn left and follow the stream. Cross the D78, then, after about 1,200 m, at the third footbridge, cross the stream.
(10) Continue straight on to reach the D4, cross it carefully, then follow it for 500 m to the left to return to the starting point (S/E).