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Hiking trails & Routes

Conti Castle – Pierre de Lait Polishing Stone loop from L'Isle-Adam - Parmain

Hiking trails & Routes

Conti Castle – Pierre de Lait Polishing Stone loop from L'Isle-Adam - Parmain

Hard

5.0

(2)

16

hikers

Conti Castle – Pierre de Lait Polishing Stone loop from L'Isle-Adam - Parmain

05:20

19.7km

270m

Hiking

Hard hike. Very good fitness required. Easily-accessible paths. Suitable for all skill levels. The starting point of the route is accessible with public transport.

Last updated: April 15, 2026

Tips

Your route passes through protected areas

Please check local regulations for:

Parc naturel régional du Vexin Français

Waypoints

A

Start point

Train Station

Get Directions

1

274 m

Conti Castle

Highlight • Castle

The Château Conti is in fact today a pretty bourgeois house built on the site of the old châteaux of the lords of L'Isle-Adam. The list is far from short: …

Translated by Google •

Tip by

2

5.43 km

Nesles-la-Vallée Bakery

Highlight • Cafe

Beside the little bench outside near the town hall that's perfect for a stop, the boulangerie won 6 prizes for their croissants. Worth the ride on itself.

Tip by

3

5.83 km

A peaceful little spot near the Sausseron

Highlight • River

A beautiful, very quiet place to recover after the hard climb of the Godfather and after going to the excellent bakery and pastry shop on Rue Thiebault, I recommend it.

Translated by Google •

Tip by

4

9.21 km

Pierre de Lait Polishing Stone

Highlight • Historical Site

A block of sandstone which served as polisher in the Neolithic

Translated by Google •

Tip by

5

9.23 km

Polishing stone in the La Tour du Lay Forest

Highlight • Historical Site

B

19.7 km

End point

Train Station

Way Types & Surfaces

Way Types

14.5 km

2.42 km

1.63 km

1.08 km

< 100 m

Surfaces

9.15 km

4.26 km

2.20 km

1.91 km

1.77 km

316 m

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Elevation

Elevation

Nothing selected – click and drag below to see the stats for a specific part of the route.

Highest point (140 m)

Lowest point (30 m)

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Weather

Powered by Foreca

Friday 26 June

37°C

19°C

15 %

Additional weather tips

Max wind speed: 11.0 km/h

to get more detailed weather forecasts along your route

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