GR1 Stage 7: 24km of Vexin Views

Hello everyone!
GR1: Stage 7 — Pontoise to L’Isle-Adam (24 km)

This stage of the GR1 offers us a transition from the urban-historic edges of Pontoise to the "River Park" atmosphere of L’Isle-Adam.
We begin the route by leaving Pontoise, passing through its historical heights before heading north. We will traverse a blend of forest paths, agricultural plateaus, and riverside trails, enjoying views over the Oise valley while crossing through the edges of the Vexin Français Natural Park. As we approach the end of the stage, the path leads us down toward the river, transitioning from the artistic heritage of the Pontoise/Auvers-sur-Oise area to the quiet, shaded woods near the water.
The GR1 Project is an opportunity to explore the natural beauty of the Île-de-France region, all within easy reach of Paris. Spanning a total of 550 km, this circular trail takes you around the city in a clockwise direction, offering a unique way to discover the peaceful landscapes, charming forests, and picturesque villages surrounding Paris.

!!! If it rains, we will have some muddy parts in the forest (white shoes are still accepted).

Our trail is here: https://mapy.com/s/hudegozabe

📍Meeting Point
Saturday, Feb 21, at 10:20 AM
Pontoise Train Station – in front of the train station.
To get there, you can take train line J from Gare Saint-Lazare at 09:37 AM, in the direction of Boissy-l'Aillerie, arriving at Pontoise at 10:18 AM. (try to catch this train, otherwise you will arrive too late)

🎯Ending Point
We will finish at L’Isle-Adam Train Station.
Due to scheduled maintenance (Reduced Service), our return journey to Paris involves a short connection. We will aim for the following departure:

• Departure: 16:22 (4:22 PM) from L’Isle-Adam – Parmain
• Transfer: Change at Persan-Beaumont (arriving 16:30, departing 16:40)
• Arrival: Gare du Nord at 17:24 (5:24 PM)

Note: There is usually another option an hour later (17:22) if our pace is more relaxed. We will check the live status together before we reach the station!

📏Hike Details

• Distance: ~24 km
• Elevation gain: +300 m
• Duration: ~6h-7h (including breaks and lunch)
• Difficulty: Moderate(ish) – you need to comfortably walk 10-15 km in your day to day schedule.
• Lunch: We’ll stop for lunch/snacks in the forest or where we find a good place, so please bring your own food and water.
• Language: English – ideal for expats and anglophones living in or visiting Paris.

You are responsible for your own actions — please ensure you feel comfortable with the distance, and you act responsibly.

🎒What to Bring

• Small backpack
• 1L of water
• Lunch/snacks
• Comfortable walking shoes
• Rain jacket or umbrella

⭐Participation
€10 per person, cash or via Revolut/Lydia at the end of the hike.
(If you don't have a Navigo Pass, a round-trip train/metro ticket is €5.)
See you there!
Mihai