Parking near the Moulin Vert school.
(S/E) Head towards the Moulin Vert footbridge via the Manoir des Salles promenade and follow the path that runs alongside the Stéïr to the weir.
(1) Leave the path and turn left onto Avenue des Prés. At the roundabout, at the Route de Locronan, go down to the left and then take a passage on the right between the houses leading to Rue des Sources. Turn left to reach Allée de Kérayen (beech tree alley).
(2) Walk up to the top and, facing the ring road, turn left to walk along a field that joins the Route de Guengat. Turn left onto this road.
(3) At the electricity substation, turn right onto the path that runs alongside it and then goes around a housing estate. Continue along this path until you reach the intersection with another path.
(4) Turn left, continue along this path for a few metres, then turn right to cross a meadow. At the end of the meadow, turn right to descend to the Kermabeuzen viaduct.
(5) Continue along the path that goes straight up, follow it until it joins Chemin de Menez Gwen (barrier), which leads to the Guengat road.
(6) At the bus stop, turn left and follow the road to Chemin de Toulgoat, where you turn right onto the bridle path that leads to the Manoir de Toulgoat on the left (private property, not open to visitors).
(7) Continue along the path that descends to the bottom of the Kermabeuzen valley, turning left. Pass under a fallen tree.
(8) Turn left onto a path that leads into the woods. If you reach a footbridge, turn back as you have missed the start of the path. Follow the path through the woods, which first runs alongside a marshy area and then meadows bordered by the Kermabeuzen stream. Pass behind the Moulin Roux farm. The path climbs and overlooks the stream, which becomes less visible.
At a fork, turn right and begin a descent to reach a footbridge over the stream.
(9) Continue with the stream on your left, passing a pole marked No. 144 indicating a gas pipe. Continue along the stream, pass under the ring road viaduct, go around the retention basin on the left and turn left. This section is visible on OSM.
(5) Take the last path that goes up to the right. Continue straight ahead to reach the small road to Manoir de Kerlazenet and follow Allée de Kerlazenet to the Guengat road.
(10) Go down to the right towards the Moulin Vert neighbourhood, turn right at the first street to go up Allée René François Le Menn. When you reach the top, turn left to join a path overlooking the allotments. Continue to Rue Louis de Carne and follow it. Turn right then left onto Rue de Kérallan, which joins Venelle du Moulin. Continue to Rue du Moulin Vert, where you turn right towards the roundabout.
(11) On the left, follow Rue du Cosquer and, at the old bar "Ar Ruz Boutou", turn left to cross the river via the double bridge (you can make a detour to go to the end of the islet, 300 m there and back). Turn left and continue to the next footbridge, where you cross the Steïr again. Follow the path that passes in front of a landscaped median to return to the starting car park (S/E).