Refine your search for walks in Mérantaise (ruissseau) - Affluent de l'Yvette
The Tête Ronde Forest and Saint-Aubin Wood

A hike which is mostly in the forest, with lovely sections along the Mérantaise river and the ditches which run down from the Saclay Plateau.
Balconies and the Yvette plain

A loop in the Chevreuse Valley, with magnificent landscapes, in a wooded and rural setting close to Paris. The first part is a walk through the woods on the plateau overlooking the Yvette Valley. The return journey, parallel to the outward route, is mainly on flat ground. Most of the walk is well shaded and flat, but there are also some fairly steep ascents and descents. The area is very popular with walkers and mountain bikers, but it is well worth a visit.
Walks near Mérantaise (ruissseau) - Affluent de l'Yvette
Following the Bièvre river through Saint-Quentin-en-Yvelines in Igny

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.
From Le Perray to Rambouillet via ponds, ditches and the Drouette river

A hike from station to station with a water theme! In the Parc Naturel de la Haute Vallée de Chevreuse and then in the Forêt de Rambouillet, a pleasant route, mostly shaded, along ponds, small canals and a charming river, the Drouette.
Bièvre Valley - Château de Versailles

Hike connecting Igny (Essonne) to the Palace of Versailles. The route follows the Bievre, and 80% of the route is on roads through forests. A calm, cool walk with scenery that will leave you with a unique souvenir.
From Chatou to Le Vésinet in a loop along the Seine

This is a very simple walk, as it follows the Seine almost from start to finish. There are beautiful views of the river and large, attractive houses along the way.
Billancourt, Ile Seguin and Ile Saint-Germain

We start by exploring Billancourt's industrial past on the former Renault factory sites, with a detour to the Ile Seguin. We then continue on to the Ile Saint-Germain, with its residential area and large green park. We end with a tribute to French cinema. This is an urban itinerary, but numerous parks and gardens, as well as many passageways, alleys and even footpaths, allow you to avoid the inconveniences of traffic.