Etang d'Abbecourt walks

On this walk from station to station, you’ll follow the Mauldre river through the countryside, passing through several villages to discover some heritage sights.

A hike from station to station, most of which takes place in the Forest of Saint-Germain-en-Laye, which we cross from south-west to north-east. It is an opportunity to walk through forests of various species and to come across two ancient crosses and two oratories. The route ends with a water theme, at the confluence of the Seine and the Oise.

A walk on the plateaus above the Mauldre valley. A rolling landscape as far as the eye can see accompanies you throughout the hike.

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.

A hike from station to station that crosses the Marly National Forest and then the Tailles d'Herbelay Departmental Forest. It then offers a visit to the charming town centre of Chambourcy and a short walk in the Saint-Germain-en-Laye National Forest. The route ends in Poissy, where you can admire the Collegiate Church of Notre-Dame and the remains of the Old Bridge over the Seine.

A walk from station to station that crosses the Marly State Forest, then Marly Park and finally the Louveciennes Forest. The route ends in Vaucresson, in an urban setting.

The walk begins with a very varied section of the GRP® "la Seine impressionniste", starting with the imposing ESA Ariane rocket factory and its loading dock, a charming marina, the Île de loisir du Val de Seine, and several very large ponds. It continues through Triel-sur-Seine, with its pleasant Parc Senet and the architecturally intricate St Martin’s Church. The walk through the Bois d’Hautil along easy yet unspoilt paths is well worth the detour for its chestnut forests dotted with a few fine oaks, and punctuated by a large number of sinkholes resulting from the collapse of underground quarries. And we finish off gently, admiring the confluence of the Oise and the Seine. ⚠️ User comment on 18 May 2026:>Please note: at point 8, the path is closed in both directions due to reported risks of collapse; instead, take the GR®2 further down to cross from east to west

A walk from station to station that begins with narrow streets and paths in L'Étang-la-Ville and Mareil-Marly, through their gardens and apple orchards. The rest of the route takes place entirely in the Marly Forest, alternating between compacted tracks, sometimes damp dirt tracks and little-known paths deep in the undergrowth. Along the way, you’ll find beautiful woodland scenery, several remarkable trees and an old 18th-century cross.

A walk from station to station, mainly through woodland. The route alternates between wide, signposted paths and less-used trails where a good sense of direction is useful. Along the way, there are lovely woodland scenes, several remarkable trees and an old 18th-century cross.

The Marly Pumping Station was built at the end of the 17th century to pump water from the Seine and supply the ponds at the Château de Marly and those at the Château de Versailles. This walk, largely through urban areas, passes through a small section of the Marly Forest and then the park of the same name, where the ponds still remain. After a steep descent to the Marly Pumping Station, the route crosses the picturesque Île de la Loge before climbing back up to the heights of Marly-le-Roi.