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The Stone Bridge – The Grand Lake - Belle Dune loop from Fort-Mahon-Plage

Routes

Mountain biking trails

The Stone Bridge – The Grand Lake - Belle Dune loop from Fort-Mahon-Plage

Easy

5.0

(2)

riders

The Stone Bridge – The Grand Lake - Belle Dune loop from Fort-Mahon-Plage

01:23

27.0km

60m

Mountain biking

Easy mountain bike ride. Great for any fitness level. Suitable for all skill levels. The starting point of the route is right next to a parking lot.

Last updated: August 12, 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

Start point

Parking

Get Directions

7.76 km

Château d'Authie

Highlight • Castle

It is in the small village of Conchil-le-Temple that the castle of Pas d'Authie is erected. Towards the middle of the 19th century, Baron de Torcy Félix Moulart had a …

Translated by Google •

Tip by

8.19 km

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

8.26 km

Footbridge over the Authie

Highlight • Bridge

Uberquerung der Authie 💦

Crossing L’Authie 💦

Translated by Google •

Tip by

25.1 km

The Grand Lake - Belle Dune

Highlight • Settlement

The car-free Ecological Holiday Park Belle Dune is located in a protected environment 2 km from the sea and is truly an oasis of peace. The holiday park consists of …

Translated by Google •

Tip by

27.0 km

End point

Parking

Way Types & Surfaces

Way Types

14.6 km

6.25 km

4.92 km

978 m

260 m

< 100 m

Surfaces

17.5 km

7.66 km

1.43 km

325 m

104 m

Elevation

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

Weather

Wednesday 2 September

22°C

18°C

40 %

Additional weather tips

Max wind speed: 32.0 km/h

to get more detailed weather forecasts along your route

Comments

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

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The Stone Bridge – The Grand Lake - Belle Dune loop from Fort-Mahon-Plage

Château d'Authie

The Stone Bridge

Footbridge over the Authie

The Grand Lake - Belle Dune

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