Belle Eglise de ronquerolles walks

The ninth stage, entirely in the Oise department, of the Grand Tour of Île-de-France on the GR®11, between the stations of Bornel-Belle-Église in the Esches Valley and Cires-lès-Mello in the Thérain Valley. It consists of a crossing of the Pays de Thelle, from west to east, in the south of the department, and always through magnificent varied landscapes, between woods and fields.

La randonnée se déroule d'abord à travers la Forêt de Carnelle, avec un passage à la superbe Allée couverte de la Pierre Turquaise, la plus imposante d'Ile-de-France. On continue en forêt puis à travers champs, pas loin de l'Oise, pour une visite à l'ancienne Abbaye de Royaumont. On termine entre bois, prés, champs et zones résidentielles.

A walk starting from Valmondois towards Ogivaux Castle and Moulin le Roy, then heading towards L’Isle-Adam through the woods. A stroll along the left bank towards the new port of L’Isle-Adam, then a walk around the lake, and continuing along the banks of the Oise via the GR®1 greenway.

Half of the route takes you through the Forest of L'Isle-Adam. This hike from station to station offers other points of interest, including two covered walkways dating from the Neolithic period.

Visit Royaumont Abbey via Viarmes and Luzarches, following the GR®655 circular route, for a wonderful day out with the family.

Tenth stage of the Grand Tour of Île-de-France via the GR®11, connecting the Cires-lès-Mello railway station to the Chantilly-Gouvieux railway station, around the River Oise and two of its tributaries, the Thérain and the Nonette. The built heritage here is remarkable, between the abbey church of Saint-Leu d'Esserent and, of course, the town and estate of Chantilly.

A circular loop from station to station accessible via line H. Starting from the town of Bouffémont, it takes you into the Montmorency Forest and on to the Château de la Chasse and its pond. Before and after the château, the route follows various forest trails in the shade of century-old trees.

Starting mainly in the forest and then crossing fields on good paths, this hike from station to station has its share of remarkable sights. You can enjoy an old market hall, two beautiful churches, a dovecote, a spring and a menhir, as well as a natural curiosity, the two intertwined trees in the Forest of Coye.

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.

A walk through some woodland, passing through Saint-Leu, Montlignon, Montmorency, Saint-Brice-sous-Forêt and, finally, Écouen. A lovely way to spend a day with friends or family – and why not stop off at a good restaurant in Piscop before finishing the route? 17/02/2026: Route change between (11) and (12) to avoid a road closed to traffic.