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View of the route des crêtes – La Roche-Guyon Castle loop from Rosny-sur-Seine

Routes

Mountain biking trails

View of the route des crêtes – La Roche-Guyon Castle loop from Rosny-sur-Seine

Hard

riders

View of the route des crêtes – La Roche-Guyon Castle loop from Rosny-sur-Seine

06:53

79.1km

1,230m

Mountain biking

Hard mountain bike ride. Very good fitness required. Advanced riding skills necessary. The starting point of the route is accessible with public transport.

Last updated: April 29, 2026

Tips

Includes segments that go up or down a series of steps

You may need to carry your bike.

After 42.4 km for 36 m

After 42.5 km for 28 m

Waypoints

Start point

Train Station

Get Directions

2.54 km

Forêt de la butte verte

Forest

8.40 km

Old Limay Bridge

Highlight • Bridge

to refresh you there is no better but be careful to find out about the level of the dam because sometimes it is impossible to pass there

Translated by Google •

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9.96 km

View of the Vexin Français Regional Natural Park and River

Highlight (Segment) • Viewpoint

41.6 km

View of the route des crêtes

Highlight • Other

superb place with a really nice view of Gasny, if you continue on this path you will arrive on the ridge road just above the Chateau de la Roche Guyon

Translated by Google •

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42.7 km

The castle of La Roche-Guyon impresses the adventurers passing through Vexin. It dates from the Middle Ages and since its construction, each century has left its mark.

As its name suggests, the castle leans against chalk. This creates a beautiful dialogue between the building and its environment. Is this the way art finds beauty in nature?

Here are the visit times and prices:
chateaudelarocheguyon.fr/tarifs-horaires

Translated by Google •

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44.6 km

Viewpoint

45.7 km

View of the Seine Valley from Chemin de l'Aérodrome

Highlight (Segment) • Viewpoint

With at times a very nice view of the Seine

Translated by Google •

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50.3 km

The ferry from Vétheuil to Lavacourt

Highlight • Ferry

At a time when bridges are legion to cross waterways, this ferry that connects Vétheuil and Lavacourt reminds us of another time. You will find more information on how to use it here: mairie-vetheuil.fr/tourisme-et-loisirs/vacances-vetheuil/le-bac-saisonnier.

Translated by Google •

Tip by

57.0 km

View of the leisure center and La Roche castle in the background

Highlight • Other

very quiet place with a magnificent view on the leisure base of mousseaux and in the background on the crests you will be able to see the castle of Roche Guyon continue on this path you arrive on Vétheuil where there is a magnificent church and a glacier in fall to the ground, you can then take the ferry and take a walk in the regional park or on the basis of leisure

Translated by Google •

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67.3 km

Panorama of Mantes-La-Jolie

Highlight • Other

Panorama from Saint Sauveur Hill (Limay) above Mantes-la-Jolie.
A must-see for all Mantes residents who want to gain height to admire the city and the meanders of the Seine.
Facing west, this spot is perfect for watching a summer sunset.

Picnic tables are available for a pleasant break.

Next to the orientation table, what is said to be the remains of an ancient Viking gallows...

Map link:
maps.app.goo.gl/GCKTYRVBBraUSWJJ7

Translated by Google •

Tip by

79.1 km

End point

Train Station

Way Types & Surfaces

Way Types

51.6 km

10.4 km

6.95 km

6.34 km

3.79 km

< 100 m

Surfaces

52.6 km

12.8 km

10.0 km

1.66 km

1.43 km

682 m

Elevation

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

Highest point (200 m)

Lowest point (20 m)

Weather

Thursday 21 May

27°C

11°C

0 %

Additional weather tips

Max wind speed: 8.0 km/h

to get more detailed weather forecasts along your route

Our route recommendations are based on thousands of hikes, rides, and runs completed by other people on komoot.

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View of the route des crêtes – La Roche-Guyon Castle loop from Rosny-sur-Seine

Old Limay Bridge

View of the Vexin Français Regional Natural Park and River

View of the route des crêtes

La Roche-Guyon Castle

View of the Seine Valley from Chemin de l'Aérodrome

The ferry from Vétheuil to Lavacourt

View of the leisure center and La Roche castle in the background

Panorama of Mantes-La-Jolie

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