Park in the car park between the post office and the church in Plogastel-Saint-Germain.
(S/E) Exit the car park opposite the restaurant "Le Kastel", go up the street of the same name on the left and turn right into Rue de la Fontaine. Note the beautiful sundial on the house being restored on the right-hand side.
Marked by mountain bike signposts "Route des Vallées de Plogastel"
Follow this beautiful sunken path which turns right and leads to a well-maintained wash house. Continue along the same path.
(1) Turn right and cross a stream over large flat stones (dry at the end of June) and continue towards the hamlet of Kervil, which you go around on the left to reach the D140.
(2) Follow this road carefully for about 400 metres, pass two houses on the left and turn right onto a new sunken lane which you follow until you reach a small road.
No signposts
(3) Turn right onto the small road, passing the group of houses (Ty Bozec on the map). The road, used mainly by agricultural vehicles, becomes narrow and ends at a house. Part of the purple route on the IGN map is inaccurate at this point.
(4) Just before a letterbox, look for a discreet grassy path (old post) on the left. At the start, the path is bordered by the remains of a wooden fence. Walk along the orchard adjoining the house on your right and continue along a wooded path and then a field boundary.
From there, you will see the bell tower of Plogastel-Saint-Germain and four wind turbines.
Continue along this path, which descends steadily between fields until it joins another path coming from the left.
(5) Turn right and follow this wide dirt track, which joins a road at the Ménez Ogan farm. Continue straight ahead on this road, passing a double row of beech trees on your left, which is the private property of Manoir le Higuy. Pass the access road to Ty Phiou (Ty Fiou on the map) and arrive at the junction with the D240. Turn left and continue to the entrance of the manor house, decorated with a monumental17th-century gate.
Since 1987, this manor has belonged to an English investment group.
(6) Retrace your steps a few metres along the road. After two private entrances, look for a discreet path at the edge of a wood. The private property sign only applies to the wood itself, which is marked off by a wire fence. Follow this well-marked path, which overlooks the road but does not appear on any map. Go up the steps and continue to the end of the path, which ends at the road opposite a pedestrian crossing. Note the wash house on the right.
Cross carefully, continue to the left behind a wooden guardrail and you will arrive at a wash house.
(7) Leave the main road and take the uphill street opposite, marked as a no-entry road. After about 200 metres, turn left to cross the Cité des Hortensias (new no entry signs) and you will come out onto the D240. First turn left then right to enter Allée de Ménez Gouéron (signposted Moulin du Hilguy) and turn right into the first street, Allée des Sources.
(8) Just before a housing development under construction (2019), turn left onto a farm track lined with houses on the left. Follow this wide tree-lined track straight ahead, reach a small clearing and continue straight ahead. Walk along the edge of a field on the right (respect the crops) and go downhill to find the continuation of the track. Follow it to the right, pass a discreet fountain on your left, and continue along the wide lane bordering the meadows until you reach a road (D57). Go up this road on the right, with a grassy strip on your left.
(9) At the sign for Briscoul (beautiful view of the church steeple), turn left and just before the end of the tarmac section, turn right onto a path (visible on Open StreetMap) and join a side path.
Turn left, reach the access road to the houses in Roz ar Gall and continue to the junction with the D57.
(10) Go up this road on the right, which overlooks a wetland, and leave it at the first bend (signposted Le Gof, PVC joinery) and pass this business.
(11) At the mountain bike signpost, go straight up the path which leads to a street at the top. Turn right and go down this street. Near a three-way junction, turn right into Impasse de l'Église (viewpoint over the bell tower). Opposite the church, turn left to return to the Post Office car park (S/E).