Médan walks

The banks of the Seine and the hillsides in Triel-sur-Seine

The first part of the circuit from Bures to Chapet passes through fields along farm tracks, then crosses Chapet and reaches the hamlet of Brezolles, before returning through the woods

A circular walk following the GR®1 from the Triel-sur-Seine Bridge to the Parc de la Bruneterie in Orgeval. Along the way, you’ll discover Villennes-sur-Seine and then Médan, the town where Émile Zola’s famous house stands on the banks of the Seine.

A walk along the Seine from Triel-sur-Seine to Gargenville, taking in footpaths, narrow streets and the Île de Loisirs du Val de Seine, with panoramic views over the plain. Castles, wash houses and ponds are all waiting to be discovered along this route.

This walk, which initially follows the Seine to Villennes, will allow you to see many different aspects of the riverbanks and the surrounding area. You will then take the town’s narrow streets, before heading back down through the woods and fields to Verneuil.

This walk through the old streets of Verneuil, its parks and gardens is not difficult. The walk continues through the forest and along some of its varied paths. End of the urban route, nice little shops, cheese shop, bakery, etc. Finally, a gently sloping path leads to the station.

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, 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.

This circular route follows theGR®1 trailfrom Parc de la Bruneterie in Orgeval to the Forest of Marly on the way there. On the way back, the route crosses the Joyenval Golf Course and the commune of Chambourcy.

A hilly route from village to village, with views of Paris and La Défense.

What could be more relaxing than discovering the architectural, historical and natural heritage whilst strolling along the Seine... A route suitable for everyone, young and old, which will take you from the Fin-d’Oise district, the historic heart of the river trade, to the Denouval district, passing by the main monuments in the city centre.

In search of a little blue butterfly. During a break halfway through, I saw a magnificent blue butterfly, just once, which was quite exceptional. This gave me the idea to write an article and since then, I have always dreamed of seeing it again.

Narrow paths, steep trails. Explore the picturesque paths and trails of the town of Andrésy. It's a different way to discover the charm of Andrésy, between town, countryside and the banks of the Seine.

Do you enjoy walking? Here is the ideal hike that will take you on a route full of surprises! Between town, countryside and forest, discover Andrésy as you've never seen it before: a town in its natural state!

A pleasant walk starting from the top of Andrésy towards Maurecourt and Jouy-le-Moutier along country lanes.

A pleasant hike through the forest and along a golf course in a little-known part of the Marly National Forest.

A lovely, flat route to enjoy at a leisurely pace along the banks of the Oise, with a section high up behind the Pays de Maurecourt offering magnificent views of the Oise. This region is even more beautiful when viewed from the footpaths.

A circular route which, on the outward journey, follows theGR®1from Vaux-sur-Seine to Sagy. The route passes very close to the Châteaux de Villette and Vaux. Before reaching the finish, the route runs alongside the Seine for a few hundred metres.

A circular route which, on the outward journey, follows theGR®1from Vaux-sur-Seine to Triel-sur-Seine. On the return journey, the route passes through Chanteloup-les-Vignes. Overall, the route circles the Forêt de l'Hautil.

A station-to-station walk, which can also be done as a slightly shorter loop. The route is mainly woodland, using both signposted paths and little-travelled paths in the undergrowth. The Étang du Corra, a protected site, offers an interlude with beautiful views and the chance to spot many birds.

A circular starting from Maurecourt cemetery, passing through the Berthe Morisot trail, the Château du Fay, the Écancourt farm, the Bois de Jouy and returning to Maurecourt along the old railway line.

A hike from station to station that crosses the entire western part of the Saint-Germain-en-Laye National Forest. A few ancient crosses mark this forest trail. The route ends in Poissy, where you can admire the Notre-Dame Collegiate Church.

A hike from station to station that crosses the entire eastern part of the Saint-Germain-en-Laye National Forest. A few crosses and oratories mark this forest trail. The route ends in Saint-Germain-en-Laye, where you can admire its castle, built in the 12th century.

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

This route to the north of the Forest of Saint-Germain-en-Laye and near Conflans-Sainte-Honorine takes you to the Étang du Corra, a pond with rich biodiversity that is a popular spot for birdwatching. The Pavillon de la Muette is a neoclassical hunting lodge built at the request of Louis XV.

A former royal hunting ground, the forest of Saint-Germain-en-Laye now offers beautiful high forests with a variety of tree species. The proposed route, marked by old crosses and oratories, reflects this diversity.

Circular in the Forest of Saint-Germain-en-Laye, passing notably by the Étoile Notre-Dame de Bon Secours, the Oratory of Sainte-Geneviève, the Mare aux Canes, the Étoile Saint-Anne and the Étoile Saint-Joseph.

The route follows the Avenue Verte (Paris-London cycle route) from Jouy-le-Moutier to Vauréal. After crossing the Oise at the major axis, it returns via the Cergy ponds and the towpath to the Pont de Neuville bridge.

A short walk, where heritage sites (churches, wash houses, covered walkway) alternate with a path along the Oise river.

A long hike from station to station, alternating between the banks of the Seine, forests, fields, towns and villages, offering numerous views of the Seine and the French Vexin. The route, dotted with historical landmarks, also serves as a reminder that heavy fighting took place in the region in August 1944.

This circuit consists almost exclusively of paved forest roads, at least in part, and is closed to motor traffic. This allows you to hike in the forest without having to surf on paths full of water and mud in winter.

A lovely walk along the banks of the Seine, passing through pretty villages such as Evecquemont. The starting point and finishing point are two stations on the same SNCF line.

Set off to explore the three megaliths listed as historic monuments on the circular Oise route: two menhirs and a covered passageway, as well as the banks of the Oise, a pond, woods, a wash house, two wells, a fountain, the Axe Majeur and scenic viewpoints.

This walk takes you past numerous wash houses fed by springs located on the circular Oise in the municipalities of Jouy-le-Moutier, Vauréal and Cergy. Along the way, you will discover the Jouy-le-Moutier municipal park known as "Parc Raclet", the Rue des Blanchards and its curiosities, the old railway line that linked Pontoise to Poissy, the Axe Majeur, Gérard Philippe's house and the Cergy ponds leisure centre.

This circular walk takes you on a journey of discovery through the four vineyards of Jouy-le-Moutier. You will learn about the past activities of this hillside with its old limestone quarries, the former CGB railway line that linked Pontoise to Poissy, the Jouy-le-Moutier menhir and two wash houses.

Half urban, half rural route to discover old Meulan-en-Yvelines and the views over the Aubette and Seine valleys.

This circular route follows theGR®1from Feucherolles to Saint-Germain-de-la-Grange on the outward leg, passing through Davron and Thiverval-Grignon. On the return leg, you’ll discover Chavenay. Each of the three villages has its own wash house and a remarkable church. Much of the walk takes place through fields.

A mainly forest route, alternating between wide paths and trails winding through the undergrowth. An opportunity to discover a charming pond and explore a well-maintained botanical trail.

This walk can be started from Meulan-Hardricourt station and follows marked paths for a good part of the way, even if they are not always easy to identify, particularly the access tothe GR® 2. During this walk, you can see the church of Hardricourt, pass through fields, see La Défense, enjoy the undergrowth, admire the pretty village of Mézy-sur-Seine and, if you are feeling adventurous, dip your feet in the water (in summer) and enjoy the banks of the Seine. Please note that in cold weather, some sections of the forest may be muddy and difficult to walk on.

A long hike from station to station that veers away from the Seine Valley (which is not particularly suitable for hiking in this area) and climbs to higher ground. The route alternates between wooded sections and stretches through fields with sweeping views. There is a wealth of heritage to discover, with two beautiful Romanesque churches in the first part and, towards the end and as a grand finale, the Gothic Collegiate Church of Mantes-la-Jolie.

A varied hike, with a beautiful wooded route in the western part of the Forest of Marly and a stroll through the village of Feucherolles. A hike with two loops, lending itself to several variations, such as limiting yourself to the 7.5 km forest loop.

A walk that allows you to discover the banks of the Seine at the pace of the barges, first along the water's edge, then from a higher vantage point. You can also discover a rich heritage, such as the royal quarries, the Moorish house of painter and photographer Victor Madeleine (1855-1931) and the River Transport Museum.

The route goes around the Joyenval golf course, on which the old abbey is located, and passes in front of the Désert de Retz. The ruins of the Château de Montjoie and a hunting table are also located near the route.

A water-themed hike: from the meanders of the Aubette to the springs that enliven the Vexin region.

A hike that alternates between forest and fields, with a small pond that is ideal for a pleasant break.

A pleasant route alternating between small villages, forest edges and wide open horizons.

From station to station through the Forest of Saint-Germain-en-Laye with a short detour through the historic centre of the village of Mesnil-le-Roi. Arrival in Conflans-Sainte-Honorine, capital of inland waterway transport.

Starting from the Saint-Germain-en-Laye RER station, this loop begins on the grounds and terrace of the château, then alternates between wide forest paths and trails that wind through the undergrowth.

Starting from the banks of the Seine opposite Île Verte, walk up the narrow streets and paths to Villa Paul Poiret.

From boatmen to Henry IV, this walk reveals what lies beneath the terraces of the Château de St Germain: paths winding between the pavilions, trees from the Île-de-France region, a walk under the terrace, the banks of the Seine and Corbière Park.

The Cergy-Neuville Leisure Centre is located in a loop of the Oise River. The hike crosses the centre, giving you an idea of the variety of activities on offer there. It continues along the slopes of the right bank of the river, offering beautiful views of the entire meander. The passage through Port-Cergy, as well as several heritage sites (churches, wash houses, covered walkways, etc.), adds to the interest of the walk.

Around Saint-Nom-la-Bretèche station - Marly Forest, a walk in a beautiful deciduous forest. It suffered greatly from the great storm of 1999, which flattened the oak trees on the motorway like straw, but this hike has a high density of remarkable trees (oaks, hornbeams, beeches). As the Marly forest is crossed by several busy roads, this hike focuses on the quietest part. It also offers a few viewpoints.

The second stage ofthe GR®1, this walk takes you through the Forêt de Marly and various charming villages such as Feucherolles and Orgeval. The first part is through the forest, whilst the second alternates between meadows, built-up areas and woodland. This stage is notable for the variety of landscapes you’ll encounter.

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.

A mainly forest route with several remarkable trees here and there. The site of the Croix Saint-Michel offers a view stretching as far as Paris. A short but fairly challenging hike, given the alternating ascents and descents (the total elevation gain is probably underestimated; allow for around 200m).

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 lovely little circular walk along the Seine, between Le Pecq and Bougival.

This circular mainly covers the Marly Forest, allowing you to walk theGR®1from Chambourcy to Louveciennes. On the way back, the route crosses the Parc du Domaine Royal de Marly.

A hike from station to station with the Oise as the guiding thread. You will cross several wooded parks and follow the river for a long time, mostly on a right of way. At the end of the route, the passage through Auvers-sur-Oise is an opportunity to evoke the famous painter Vincent Van Gogh.

A walk between Gaillon-sur-Montcient and Tessancourt-sur-Aubette to discover different aspects of the Vexin region, as well as the Jardin de la Douaye (Vexin flora, photo exhibitions), a perfect spot for a break along the route.

A walk starting from the new town of Cergy will take you past the circular bends of the Oise, the Cergy leisure centre and its ponds, and the old villages of Vauréal, Jouy-le-Moutier and Neuville-sur-Oise in the Val d'Oise. You will arrive in the Yvelines at Conflans-Sainte-Honorine, the capital of inland waterway transport at the confluence of the Seine and the Oise.

A circular route for a day's hike. Starting from Sagy, you will pass through Saillancourt, Villette, Condécourt, Longuesse and Vigny.

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 relatively short route but with some steep slopes, in a beautiful forest setting.

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.

A walk from station to station, following the river. After skirting the Oise to Port Cergy, the route joins the Île de Loisirs de Cergy, then takes the Axe Majeur to reach the old Pontoise–Poissy railway line. After the confluence, it follows the Seine along the quays of Conflans-Sainte-Honorine, following part of the discovery trail, before reaching the station.

The park is located in Marly-le-Roi and managed by the Public Establishment of the Palace, Museum and National Estate of Versailles. A sloping park on the south bank of the Seine, its lower part overlooks the centre of Marly. To the east, it is very close to the Louveciennes national forest, from which it is separated by the Route de Versailles. It still features the grand alignments of the Louis XIV era, the layout of the château on the ground, and the drinking trough downstream of the park with its two basins topped by copies of the Chevaux de Marly. The royal gate and the gates of the former château, such as the main gate and the Phare gate, protect access to the estate. The GPX track may prove useful.

This route is rich in history and allows you to discover the heritage of Pontoise and its little-known paths.

A half-day walk, mainly in the woods, with a beautiful pond and the vast lawn of the Domaine de Beauregard.

A former royal estate (Louis XIV liked to entertain his friends here, away from the court), the Parc de Marly combines a rich heritage with the pleasure of strolling along woodland paths, wide avenues and vast lawns.

A hike on the slopes of both banks of the Mauldre, a tributary of the Seine between the Plaine de Versailles and the Mantois. The route, consisting of two loops, alternates between residential areas, forests and fields. A rich heritage, partly linked to water, can be discovered along the way: an old fortified castle, old mills, a siphon bridge, farm buildings, a church, etc.

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

From the Mauldre Valley to the Seine Valley, a hike from station to station that alternates between fields and woodland. The Étang d’Abbecourt offers a perfect spot for a break, and the Church of Saint-Étienne in Vernouillet adds a touch of heritage.