Start from the Place de Gascogne car park along the D42.
(S/E) With your back to the village, take the road on the left. Leave the road on the left leading to the church and the cemetery, then continue to a junction.
(1) Head downhill to the right, going round the riding school and tennis courts to reach a crossroads.
(2) Take the road opposite (D166), towards Marsolan and La Romieu. Follow this road to the junction with the Route de Condom (D7), just after the hamlet of La Fontaine.
(3) Continue straight ahead towards Marsolan. Follow this road (D166) which runs below Marsolan.
(4) At a Y-junction, turn right, leaving the D166 heading towards La Romieu on your left. Follow the Auchie valley and its mills to the foot of the fortified village of Lagarde.
(5) Then turn right and, 150 metres further on, turn left towards the castle via the small path that climbs steeply.
(6) In front of the imposing but ruined façade of Lagarde Castle, turn right to reach the hamlet of Lançon.
(7) Follow this road southwards as it descends towards Marsolan until you reach the junction with the D7.
(8) Continue along the road that descends opposite (south) to the hamlet of Le Tuco.
(9) Then head down towards the village of Terraube, which you can see opposite, to join the D42.
(10) Turn right onto this road to return to the junction you passed on the way there.
(2) Follow the route back to the village of Terraube and the car park (S/E).