Departure from the town of Saint-Jean-De-Monts, from the bicycle pump station at the corner of Rue de la Garenne and Avenue Valentin.
(S/E) Cross the crossroads and take the forest cycle path towards Orouet. Follow the cycle path for 1.7km. The path then branches off in three directions.
(1) Take the one on the right. The cycle path crosses the dune. Follow it for 2.3 km. Along this distance, it runs alongside a campsite and then a horse trail (watch out for pony rides) before coming out onto the road (Chemin du Chenal des Dunes).
(2) Take this road on the left for 60 metres before joining Avenue des Épines, which you should take on the right for 80 metres (caution: busy road). Turn left onto Chemin des Bosses towards the "Le Tropicana" campsite. Follow this road (which runs alongside a stream with beautiful rushes growing on its banks) for 2.1 km until you reach the junction with Avenue d'Orouet (caution: busy road).
(3) After crossing Avenue d'Orouet (D38), take Chemin de la Poelière opposite. Continue for 320 metres, then turn left for 200 metres (you are still on Chemin de la Poelière) until you reach the junction with Chemin de l'Abbaye.
(4) Follow it to the left for 500 metres to reach Chemin des Sarrazines.
(5) Turn right and continue for 2 km. You will pass in front of the hatchery, over a bridge spanning an old sluice gate on the Grand Canal, then wind your way through various marsh crops, depending on the year or season.
(6) At the "Petite Herse" crossroads, continue straight ahead on Chemin de l'Herse for 1.3km until you reach Route du Mailleau. The equestrian centre is visible on the left.
(7) Take the road opposite (Le Pré Moinard) to the roundabout, which allows you to cross the D205 (Challans to Saint-Jean-de-Monts road) for 1.4km. Take care when crossing.
(8) After crossing the roundabout, take the first road on the left (Chemin des Cabanes) and follow it for 900 metres.
(9) At the junction with Chemin du Clousis, turn left and continue for 960 metres. The path runs alongside a farm and communal greenhouses before reaching the junction at the Pibole restaurant (960 metres).
(10) Turn left onto Route de la Pibole and follow it to the roundabout that intersects with the D205 again (840m).
(11) Cross carefully and continue straight ahead towards the Red Cross convalescent centre, still on Route de la Pibole, and follow it for 130m before turning left onto Rue Henri Dunant (named after the founder of the Red Cross).
- Continue straight ahead for 400 metres until you reach the junction with Route de la Crande Cheminée.
(12) Turn right. Continue along Route de la Pibole for 150 metres, then turn left and continue for 100 metres before turning right onto Rue de la Croix Masson and following it until you reach Route des Sables, which you should cross with caution.
(13) Opposite, take Rue du Bois Martineau to Rue de la Garenne. Turn left to return to the bike pump station (S/E).
iseaux, mills, observatory...