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France
Normandy
Bernay
Saint-Thurien

Tour loop from Le Perrey

Moderate

4.0

(4)

5

hikers

Tour loop from Le Perrey

02:06

7.37km

130m

Hiking

Moderate hike. Good fitness required. Mostly accessible paths. Sure-footedness required.

Last updated: August 17, 2026

Tips

Your route passes through a protected area

Please check local regulations for:

Parc naturel régional des Boucles de la Seine Normande

Waypoints

A

Start point

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1

4.15 km

Observatoire de la GRAND-Mare du Marais Vernier

Highlight • Other

Observatory of the GRAND-Mare of the Marais Vernier.
ancient meander of the Seine. the Marais Vernier constitutes a vast wetland of 4,500 ha located on an important bird migration corridor. …

Translated by Google •

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2

4.16 km

La Grand-Mare Observation Tower

Highlight • Viewpoint

La Grand'Mare is a hunting and wildlife reserve managed by the French Office for Biodiversity. Along with the Seine estuary, it is one of the favorite migratory stopovers for surface …

Translated by Google •

Tip by

3

4.80 km

Tour

Highlight • Monument

On the road to the cottages from the Marais Vernier

Translated by Google •

Tip by

B

7.37 km

End point

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Way Types & Surfaces

Way Types

5.09 km

894 m

724 m

557 m

< 100 m

Surfaces

3.37 km

2.19 km

735 m

717 m

336 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 (120 m)

Lowest point (10 m)

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Weather

Powered by Foreca

Tuesday 13 October

19°C

9°C

0 %

Additional weather tips

Max wind speed: 9.0 km/h

to get more detailed weather forecasts along your route

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