Park in the church square in Saint-Vincent-sur-Oust.
(S) Head towards Ty Kendalch.
(1) Before Ty Kendalch, take theGR®38after Le Theil, on the right.
Follow it to the canal.
(2) Turn right towards La Potinais.
(3) Take the Potinais bridge on the left (cross the Oust). At the end of the bridge, turn left onto La Potinais.
(4) Follow the path along the canal. The path becomes tarmac; on the uphill stretch, turn left onto the small path (GR®).
(5) On the left, take a short detour to the chapel of Saint-Méen (15th and 17th centuries).
Join theGR® (on the left) signposted Île aux Pies, 1.5 km.
Take the path on the right that goes uphill.
(6) Turn left along the Oust; as you emerge from the woodland, take the path on the left.
(7) Then turn left again (GR®).
Take a steep path on the right, climbing up beneath the pine trees. Take a detour along a small path on the left for a view of the Oust and Île aux Pies.
Take the path on the left (on the right, you can stop at the municipal campsite, where there is a water tap to fill your water bottles).
(8) Return to the road on the left(GR®), follow signs for Glénac (D149). Pass in front of Sourdéac Castle (16th-century tower).
(9) Before Glénac (300m) at the road, turn left onto path A16 (GR®). Turn right towards La Gacilly.
(10) Cross the Route de Branféré (D138). Cross over and rejoin theGR® opposite. Follow the road to a junction. Cross over and turn left/right towards La Gaudinais.
(11) At the barrier, turn right into the woods. Exit the undergrowth.
(12) Turn left onto the GR®.
(13) Before the road, take theGR® on the right and continue on theGR® to Saint Jacob.
(14) Walk through Saint Jacob and, at the square, turn right towards the exit to find the old hunting lodge, the guesthouse where we will spend the night (E)
