Gometz-le-Châtel walks

This hike starts in Gif-sur-Yvette and takes you to the heights of the Saint-Aubin and Vallée Bonnard channels, following the Yvette river and returning via La Mérantaise, passing through the Bois d'Aigrefoin, the Saint-Aubin communal forest and the Coupières basin.

A walk of many faces! On forest tracks interspersed with paths through the city, you follow an old railway line with a tunnel and viaduct, finishing along the course of the river Yvette. A walk to enjoy at any time of year.

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.

From the charming village centre of Janvry, a circular route to discover two 17th-century castles. A short hike through cultivated fields and woodland.

A short hike that combines urban passages, wooded and hilly trails, and a pleasant walk along the Yvette River.

Discover nature between the River Yvette and the Guyonnerie forest. A family walk where pets are welcome.

A mainly urban, relatively short route with a slight elevation gain. A few steep steps lead up to the Bois de la Troche and the rocks of its former sandstone quarry. The walk ends peacefully along the Yvette.

Discover part of the artistic, historical and scientific heritage of Paris-Saclay University: sculptures, frescoes, scientific instruments, archaeological sites, and more. An easy walk on a campus featuring a large botanical park and the neighbouring wooded hillsides.

A hike from station to station, yo-yoing between the Yvette valley and the Saclay plateau, with a few fairly steep hills. After a mostly wooded route with some elevation, you cross Gif-sur-Yvette and then walk along a wetland area framed by two rivers. You climb back up onto the plateau, near the Paris-Saclay University campus. After visiting the old Troche quarry and walking along the edge of the plateau, you descend back into the valley.

A south-north crossing offering a very varied route. Sections through the forest alternate with stretches across fields. Water features are plentiful, with several rivers—the Yvette, the Marette and the Bièvre—and the Étangs de Montbrond set in their lush green surroundings. (Warning) The route is cut off at the point (12) due to works on Metro Line 18 (as of March 2026). A diversion is under consideration. Please refrain from undertaking this hike until further notice.

An alternative route to the first section of the Chemin Charles Péguy. It bypasses Limours and instead showcases the Hurepoix region. Discover the beautiful village of Forges-les-Bains and a route through stunning countryside.

Circular route through the Saclay plateau, the woods at the edge of the plateau and the Bonnard Marsh.

A varied hike where you gain altitude. First, you climb up to the Saclay plateau and walk along the university campus before gently descending into the Yvette valley through the forest. We climb back up the other bank and cross the Gif-sur-Yvette forest from east to west. After an urban section, we walk between fields before descending back into the forest to Saint-Rémy-lès-Chevreuse.

In addition to introducing you to the Domaines d'Ors nature reserve, this route is of interest because it allows you to discover the old sandstone quarries at the start of the route, which are ideal for fun activities, and the Ruisseau du Fond de la Cure at the end of the route, whose steep gradient and the sound of the torrent give the impression of a mountain trail.

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.