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Hiking trails & Routes

Hauts-De-France

The Stone Bridge – Baie d'Authie loop from Marquenterre

Hiking trails & Routes

Hauts-De-France

The Stone Bridge – Baie d'Authie loop from Marquenterre

Moderate

5.0

(2)

7

hikers

The Stone Bridge – Baie d'Authie loop from Marquenterre

04:09

16.5km

10m

Hiking

Moderate hike. Good fitness required. Easily-accessible paths. Suitable for all skill levels.

Last updated: August 19, 2026

Tips

Your route passes through protected areas

Please check local regulations for:

Parc naturel régional Baie de Somme Picardie Maritime

Parc naturel marin des Estuaires picards et de la mer d'Opale

Waypoints

A

Start point

1

885 m

Footbridge over the Authie

Highlight • Bridge

Uberquerung der Authie 💦

Crossing L’Authie 💦

Translated by Google •

Tip by

2

951 m

The Stone Bridge

Highlight • Bridge

The La passerelle de l'Authie, inaugurated in April 2022, is a 52-meter-long pedestrian and cycle structure that facilitates the safe crossing of the Authie river. Connecting the departments of Somme …

Showing Translation

Tip by

3

7.78 km

Baie d'Authie

Highlight • Beach

Vast marine marshland, the Authie bay is home to remarkable fauna and flora. The wild landscapes are very diverse. They alternate between salt meadows, ponds and dunes.

Showing Translation

Tip by

B

16.5 km

End point

Way Types & Surfaces

Way Types

7.39 km

6.65 km

1.18 km

1.05 km

291 m

Surfaces

9.85 km

2.89 km

2.20 km

895 m

705 m

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Elevation

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Weather

Powered by Foreca

Sunday 18 October

13°C

3°C

0 %

Additional weather tips

Max wind speed: 10.0 km/h

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