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Gare d'Osny walks
Osny circular to Boissy-l'Aillerie
The hike begins in front of Osny Town Hall in the beautiful setting of Château Grouchy and its park bordered by a pond. The walk heads north-west to the town of Boissy-l'Aillerie, returning south and then east to the starting point via Grouchy Park.
Much of the route is away from roads with motor traffic.
Walks near Gare d'Osny
From Cergy to Valmondois along the Oise
A hike from station to station with the Oise as the guiding thread. You will cross several wooded parks and follow the river for a long time, mostly on a right of way. At the end of the route, the passage through Auvers-sur-Oise is an opportunity to evoke the famous painter Vincent Van Gogh.
On the banks of the Oise from Maurecourt to Andrésy
A lovely, flat route to enjoy at your leisure along the banks of the Oise, with a high point at the back of the Pays de Maurecourt offering magnificent views of the Oise. This region is even more beautiful when seen from the footpaths.
From Achères to Achères via the Forêt de Saint-Germain and the Étang du Corra
A station-to-station walk, which can also be done as a slightly shorter loop. The route is mainly woodland, using both signposted paths and little-travelled paths in the undergrowth. The Étang du Corra, a protected site, offers an interlude with beautiful views and the chance to spot many birds.
From Verneuil-sur-Seine to Cergy via the Hautil Forest
A hike from station to station which, with a few climbs, leads from the Seine valley to the Oise valley. After the streets, alleys and paths of Triel-sur-Seine and Chanteloup-les-Vignes, you cross the Hautil Forest in a very pleasant way. Three beautiful churches and two beautiful farmhouses are to be discovered along the way.
From Valmondois to Persan along the Oise
A hike starting from Valmondois towards the Château d'Ogivaux and the Moulin le Roy, then heading towards L'Isle-Adam through the woods. Walk along the left bank towards the new port of L'Isle-Adam, then around the lake, and continue along the banks of the Oise via the GR®1 greenway.
From Valmondois to Presles via the Forest of Isle-Adam and Pierre Plate
Half of the route takes you through the Forest of L'Isle-Adam. This hike from station to station offers other points of interest, including two covered walkways dating from the Neolithic period.
From Meulan to Triel, from station to station
A lovely walk along the banks of the Seine, passing through pretty villages such as Evecquemont. The starting point and finishing point are two stations on the same SNCF line.
From Achères to Poissy through the Forest of Saint-Germain-en-Laye
A hike from station to station that crosses the entire western part of the Saint-Germain-en-Laye National Forest. A few ancient crosses mark this forest trail. The route ends in Poissy, where you can admire the Notre-Dame Collegiate Church.
From Achères to Saint-Germain-en-Laye through the forest
A hike from station to station that crosses the entire eastern part of the Saint-Germain-en-Laye National Forest. A few crosses and oratories mark this forest trail. The route ends in Saint-Germain-en-Laye, where you can admire its castle, built in the 12th century.
Banks of the Seine from Les Mureaux to Conflans-Ste-Honorine via the Bois de l'Hautil
The walk begins with a very varied section of the GRP® "Impressionist Seine" trail, starting with the imposing ESA Ariane rocket factory and its loading dock, a charming marina, the Val de Seine leisure island, and several large ponds. It continues with Triel-sur-Seine, its pleasant Parc Senet, and its Église St-Martin with its complex architecture. The crossing of the Bois d'Hautil via easy but unspoilt paths is worth the detour for its chestnut forests dotted with a few beautiful oak trees and pierced by a large number of chasms resulting from the collapse of underground quarries. The walk ends peacefully as you admire the confluence of the Oise and the Seine.