Villa gallo-romaine de Moulon "La Mare Champtier" walks

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.

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.

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.

This hike follows the route of the T12 tram-train, connecting Massy-Palaiseau to Évry-Courcouronnes, and allows you to discover a varied landscape combining urban areas, natural spaces and neighbourhoods undergoing rapid change. The route takes you along the greenway that runs alongside the T12, between Épinay-sur-Orge station and the Évry-Courcouronnes terminus, offering a pleasant and safe section for pedestrians and cyclists. This walk offers an immersion in the areas served by this new line, with opportunities to stop at the various stations to fully enjoy the local heritage and green spaces.

Second stage of the Grand Tour of Île-de-France via the GR®11, from Massy to Saint-Cyr l'École, behind Versailles.This stage, more bucolic than the previous one, consists of continuing up the Bièvre river in its valley, where it is almost entirely in the open air. Arriving near its source in Guyancourt, the GR® leaves the valley and continues towards Saint-Cyr-l'École.

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.

A route from station to station, through the woods and with some elevation gain. Walking or jogging.

Although densely urbanised, the Hauts-de-Seine department offers wonderful opportunities for walkers, with a rich heritage and often a little elevation. This series of hikes, almost all of which are accessible by public transport, takes you on a journey of discovery through this department, avoiding major roads as much as possible and favouring footpaths and alleys, public parks and wooded areas.

A hike from station to station, mainly through forest. Although located in an urban setting, this route takes you through green (in season) and peaceful areas. The Chêne des Missions oak tree and the Étang du Trou au Gants pond are two beautiful points of interest.

Greenery and culture abound on this hike from station to station (RER B) between Antony Croix-de-Berny and Sceaux. It passes through a veritable breeding ground for Nobel Prize winners. It takes in splendid parks, including Parc de Sceaux, Arboretum de Chatenay-Malabry, Vallée aux Loups and Parc Henri Sellier. It allows you to discover the places where no fewer than six Nobel Prize winners lived: Marie Curie, physics then chemistry, and Pierre Curie, physics with his wife, Frédéric and Irène Joliot-Curie, together for chemistry, Sully Prudhomme, literature, and Luc Montagnier, medicine.