Park in the car park near the Pont de l'Europe bridge in Nyons.
(S/E) Follow the RD538. After the tunnel, follow theGR®9, coming from the Roman bridge in Nyons.
(1) Turn right onto Route des Rieux (GR® 9) and follow it to the housing estate.
(2) Leave the housing estate and the tarmac road via a wide path on the right (GR®9) facing south.
(3) Take a sharp left turn onto the shaded path that gradually climbs gently (GR®9). As you climb, enjoy the beautiful views of Nyons. You will reach a crossroads.
(4) Leave theGR®9on your right and continue straight ahead. The route is no longer marked, temporarily.
(5) You will see yellow markings (PR®) on the path coming from the right, which you will take on the return journey. Continue straight ahead until you reach a large cairn.
(6) Take a hairpin turn to the right. A very pleasant, sometimes physically demanding climb along the ridge. Caution is required as the path often runs along the edge of precipices. There are numerous viewpoints on the left over the valley and olive groves. Ahead, you can see the outline of Mont Ventoux.
At the end of the climb, you will reach the Bois des Lumières educational trail.
(7) Follow it to the right until you reach the Col de la Croix. (Picnic area available).
(8) From the pass, cross the tarmac road and take the path that climbs towards the south-west. It then descends before climbing steeply again. It crosses the small road for the first time in a bend. The demanding climb continues, joining the same small road in the "S" of a bend.
(9) The climb continues along the path, which remains steep, until you reach the highest point of the walk: Garde Crosse. The effort is less intense if you take the small tarmac road, but this adds about 300 metres to the route.
(10) The views from Garde Grosse are well worth a long stop. You may be able to watch paragliders taking off. Descend by road to the previous S-bend.
(9) Join theGR® 9, which crosses the road. Turn left. The descent into the St Martin ravine is steep and hard on the ankles. Join the Col de la Croix road.
(11) Do not follow theGR® which crosses the road, but follow it to the left to the viewpoint over Nyons at 600m.
(12) Follow the wide path to the north-east. After 500m, rejoin theGR® and follow it for 600m.
(13) At the fork, leave theGR® trail, which descends steeply to the left, and continue on the yellow-marked path until you reach the path you took on the way up, 600m further on.
(5) Turn left to descend to Nyons and return to the starting point by retracing your steps (S/E).