Château des Mesnuls walks

A hike from station to station that takes us to the source of the River Yvette and then up and down through the woods that frame its valley. The route crosses the Maincourt Marsh and then an area of rocky chaos. The forest trails are interspersed with villages and hamlets rich in heritage.

A hike from station to station that will take you through the forest of the Haute Vallée de Chevreuse Regional Nature Park. Ponds, castle, forest, ramparts and museum: everything you need for a wonderful day out with family or friends.

A hike from station to station with a water theme! In the Haute Vallée de Chevreuse Natural Park and then in the Rambouillet Forest, this is a pleasant route, mostly shaded, along ponds, small canals and a charming river, the Drouette.

Fourth stage of the Grand Tour de l'Île-de-France on the GR® 11 and start of the clockwise circular section.This stage takes place entirely in the Yvelines department, connecting Villiers-Neauphle-Pontchartrain station to Orgerus-Béhoust station, crossing the Beynes forest and the agricultural landscapes of the Yvelines. The route runs alongside the Avre aqueduct, which supplies drinking water to western Paris.

Fifth stage of the Grand Tour of Île-de-France on the GR®11, connecting Orgerus-Béhoust station to Mantes-Station, still through the Yvelines. This is a northbound route that joins the Seine valley at Mantes-la-Jolie, descending the valleys of the Flexanville and then the Vaucouleurs rivers. The route follows both paths at the bottom of the valley and paths on the adjacent plateaus.

A south-north crossing of the Rambouillet and Quatre Piliers forests, from station to station! The route, mainly through forest, is long and requires a good sense of direction for the first half. Several ponds and remarkable trees line the route.

The upstream part of this series of three hikes devoted to the Bièvre river. A very pleasant walk along the river and its bodies of water, in a mostly rural setting. A hike from station to station, which can be used to adjust the length depending on the weather conditions or desires of the hikers.

This is the third stage of the GR® 11 Grand Tour of Île-de-France. It continues through the Yvelines, between Saint-Cyr station and Villiers-Neauphle-Pontchartrain station. This stage completes the 'radial' part of the GR® starting from Paris and joins the circular loop that circles the region from Villiers-Saint-Frédéric. The route passes through increasingly large wooded areas as you approach the countryside.

A hike from station to station where you play leapfrog with the Yvette River! The route is mostly close to the river and crosses a few woods and pretty parks, including the one in the western part of the Paris-Sud University campus.