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Routes
Hiking trails & Routes
France
Hauts-De-France
Boulogne-Sur-Mer
Wimereux

Dunes de la Slack — loop from Wimereux in the parc naturel régional des Caps et marais d'Opale

Routes
Hiking trails & Routes
France
Hauts-De-France
Boulogne-Sur-Mer
Wimereux

Dunes de la Slack — loop from Wimereux in the parc naturel régional des Caps et marais d'Opale

Easy

4.6

(346)

1,824

hikers

Dunes de la Slack — loop from Wimereux in the parc naturel régional des Caps et marais d'Opale

01:45

6.75km

40m

Hiking

Easy hike. Great for any fitness level. Easily-accessible paths. Suitable for all skill levels. The starting point of the route is right next to a parking lot.

Last updated: August 12, 2024

Tips

Your route passes through a protected area

Please check local regulations for:

Parc naturel régional des Caps et marais d'Opale

Waypoints

A

Start point

Parking

Get Directions

1

1.18 km

Large beach

Highlight (Segment) • Beach

Part of the GR 120, but the hiking trail is interrupted due to an eroded dune.

Translated by Google •

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2

2.64 km

Fort d'Ambleteuse

Highlight • Historical Site

This fort is the only one left of the seven that defended the coast of Boulogne.
In 169, the English king James II, chased away by his subjects, came ashore in the already silted up harbour. When Napoleon planned an invasion of England, part of his fleet was located here. From the beach you have a view of the entrance to the port of Boulogne and in clear weather even of the English cliffs.

Translated by Google •

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3

3.73 km

Dunes of the Slack

Highlight (Segment) • Natural Monument

Dunes de la Slack is a beautiful nature reserve on the Opal Coast, between Wimereux and Ambleteuse. The area is named after La Slack, a river that flows through the dunes and flows into the sea at Fort d'Ambleteuse. The area is ideal for hikers and nature lovers. There are several walking routes available, including the 'La Baie de Saint-Jean' walk, which partly coincides with the GR120 du Littoral. The dunes are a varied dune area of the Parc naturel régional des Caps et marais d'Opale.

Translated by Google •

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B

6.75 km

End point

Parking

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Way Types & Surfaces

Way Types

5.00 km

1.62 km

119 m

< 100 m

Surfaces

5.01 km

1.42 km

164 m

< 100 m

< 100 m

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Elevation

Elevation

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

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Weather

Powered by Foreca

Thursday 7 May

17°C

7°C

3 %

Additional weather tips

Max wind speed: 15.0 km/h

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This route was planned by komoot.

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Nearby routes

Easy

4.6

1,824

Dunes de la Slack — loop from Wimereux in the parc naturel régional des Caps et marais d'Opale

01:45h

6.75km

40m

Trail Reviews

YoJu
November 22, 2024, Dünenrunde bei Ambleteuse (Dunes de La Slack)

On this tour you have to climb over a field of rubble from a rockfall. According to the signs, it is not possible to get through, but if you are fairly sure-footed and feel safe, you can "climb" over it - of course at your own risk, pay attention to the weather, and watch the coast carefully. In this area, the cliffs collapse regularly. A visit to the dune landscape is definitely worth it, and is also possible without the coastal section. I don't have a photo of the highlight I added, because I found it so beautiful and enjoyed it so much, so you have to go there to experience it for yourself :)

Translated by Google

Attention, a part is no longer accessible, the path has collapsed, at the level of the beach before the car park

Translated by Google

A walk suggested in the Euroreizen.be brochure. But the brochure stated that the walk was interrupted. There were only Belgians in the parking lot. We leave on a cobblestone road between the dunes and the Slack and arrive at Ambleteuse Fort. The weather is very changeable. At the fort we continue walking between the sea and the dunes. It's high tide. Eventually we arrive at rocks where the waves crash. The dune cliff is very muddy and slippery. The dunes behind us are heavily cordoned off. We go over the rocks until we see an opportunity to climb the dune cliff. On the dune we see that it has disappeared. Erosion. We find other footsteps and follow them. Eventually we arrive at the official path that is cordoned off on this side. We cross the track and continue our way along a beautifully landscaped dune path. The weather is very changeable. From wind and rain to sun and open sky. But we have taken our steps again. 😊😄

Translated by Google

Attention, the road over the dunes along the sea has been washed away! At low tide you can easily cross the beach and take the path to the right just before the Slack.

Translated by Google

The Slack is a small river 22 km long that winds its way from its source at Mont Binôt near Hardinghen until it finally flows into the sea on the Opal Coast at the fort of Ambleteuse. It is at this place that we start our family-friendly walk. To the left of the Slack there is a very special dune area of no less than 213 hectares between Ambleteuse and Wimereux. => https://efkesweg.be/langs-de-duinen-van-de-slack/

Translated by Google

Because it went so wrong yesterday, I did it better now.... A little later in the evening, wonderfully quiet. You could hear the birds, even a cuckoo. Wild Hyacinth and other beautiful flowers. Unfortunately no sunset red... But a lovely sporty walk

Translated by Google

A wonderful loop, first along the almost deserted, very large beach, near Fort d'Ambleteuse, then through the dunes. It's tiring to walk on the sandy paths, but absolutely fantastic 🤩

Translated by Google
Pauline
April 13, 2024, Dune de Slack

The trail on Slack Dune is closed. I advise you to walk along the dune by the beach

Translated by Google
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