Viosne (rivière) à finaliser walks

A hike on the slopes of both banks of the Viosne, alternating between cultivated fields, woodland and charming villages. For about 3 kilometres, the route follows the course of an ancient Roman road, the Chaussée Jules César. There is a rich heritage to discover along the way: mills, a castle, churches, crosses, wash houses and beautiful houses.

Walk starting from Chars SNCF station passing the Château de Saint-Cyr-sur-Chars. On the way back to Chars there is a narrow pedestrian passage that starts with a staircase.

This hike through woods and fields offers beautiful views of the Viosne Valley, a small river that flows through the Vexin Français from north to south, with interesting heritage in the village of Brignancourt and a possible stop at the edge of a beautiful pond.

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

Between town and countryside, this walk is mainly marked by yellow PR® markers.

Alternating between cultivated fields and forest edges, this hike follows the Viosne River. For a little over 2 km, the route follows the route of an ancient Roman road, the Chaussée Jules César.

A pleasant and varied hike in the heart of the French Vexin. The route begins with a circular route north of Chars, between fields, meadows and small woods. After the beautiful church of Chars, there are alternating ascents and descents on the slopes of the south bank of the Viosne. The church and old mill in Brignancourt are a heritage stop before heading up the right bank of the Viosne along the edge of a wetland.

A pleasant walk starting from Boissy-l'Aillerie station, through the wooded and grain-growing areas of the Vexin plateau.

A mountain bike ride of around 25km, passing through fields, woods and pretty villages along the Viosne and Couleuvre rivers (Santeuil, Brignancourt, Le Perchay, Ableiges). A lovely spot for a break halfway along the route at the Étang de la Vallière for a picnic. No major difficulties to speak of, apart from a short path through the woods near Santeuil and a return route via the road from Ableiges to Cormeilles (though other options are available).

A circular route which, on the outward journey, follows theGR®1from Us to Bréançon via Marines, a village in the Vexin region. The return to Us allows you to explore Cormeilles-en-Vexin and cross the Viosne, a tributary of the Oise, once again.

Circular route which, on the outward leg, follows theGR®1from Us to Sagy. The route takes you through part of the Aubette Valley. On both the outward and return legs, you pass through the village of Vigny, home to its castle, well-known to film buffs.

A pleasant walk through fields and woods. Walkers will be surprised by the changing landscapes and colours.

A varied walk through fields and forests. Discover several ponds, many of which are populated by water birds: herons, moorhens, ducks, geese, coots... The two villages you pass through offer some picturesque streets typical of the French Vexin region, as well as two beautiful churches.

This marked GR® route around the Île-de-France region (with a few forays into neighbouring departments and regions) complements its "little brother", the GR®1, by forming a circular route around Paris, generally with a slightly larger radius. It follows the same overall pattern: first, a radial section starting from Paris (more precisely from the Pont d'Austerlitz, near the former confluence of the Bièvre and the Seine), going up the entire Bièvre valley, then continuing to Villiers-Saint-Frédéric, in the Yvelines. From there, it is a circular route that loops around the Île-de-France region, close to its borders with neighbouring regions. The route passes through beautiful regions, often untouched by intensive urbanisation, regional nature parks and other protected natural areas, and takes in some architectural wonders.

This is the eighth stage of the Grand Tour de l'Île-de-France on the GR®11, starting from Chars station in the Val d'Oise and heading towards Bornel-Belle-Église station in the Oise, through the north-eastern part of the French Vexin and the borders of the Pays de Thelle. This stage is unique in that it runs along the border between the Val d'Oise and Oise departments, with roughly 50% of the route on each side. The proposed itinerary passes through the Buttes de Rosne, the highest natural point in Île-de-France, although it deviates slightly from the GR® for this.

Seventh stage of the Grand Tour of Île-de-France on the GR®11, starting from the village of Genainville, in the heart of the French Vexin, and heading towards Chars station further east. This stage goes hand in hand with the previous Mantes-Genainville stage, with a night in Genainville or the surrounding area necessary to walk between Mantes and Chars stations. This beautiful stage continues the crossing of the equally magnificent French Vexin Regional Nature Park, heading generally eastwards. It joins andthen climbs up the Aubette de Magny valley, crosses a series of agricultural plateaus between Oise and Val d'Oise before descending into the Viosne valley to reach Chars.

Over 500 km long and with more than 4,000 m of elevation gain, this hike is accessible to everyone if broken down into several stages. Beautiful, rural and fairly close to Paris, it is suitable for anyone who wants to try their hand at hiking. There are many points of interest along this route. History and heritage enthusiasts, as well as nature lovers, will find something to enjoy.