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France
Normandy
Bernay
Sainte-Opportune-La-Mare

Tour loop from Sainte-Opportune-la-Mare

Hard

129

runners

Tour loop from Sainte-Opportune-la-Mare

02:07

20.3km

70m

Running

Hard run. Very good fitness required. Mostly paved surfaces. Suitable for all skill levels. The starting point of the route is right next to a parking lot.

Last updated: January 23, 2026

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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

Parking

Get Directions

1

0 m

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

2

11 m

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 •

Tip by

3

668 m

Tour

Highlight • Monument

On the road to the cottages from the Marais Vernier

Translated by Google •

Tip by

B

20.3 km

End point

Parking

Way Types & Surfaces

Way Types

19.5 km

599 m

103 m

< 100 m

Surfaces

16.9 km

2.61 km

599 m

115 m

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Elevation

Elevation

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Weather

Powered by Foreca

Sunday 22 February

13°C

8°C

18 %

Additional weather tips

Max wind speed: 21.0 km/h

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