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Dunes of the Slack – Fort d'Ambleteuse loop from Wimille – Wimereux

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Hiking trails & Routes

Dunes of the Slack – Fort d'Ambleteuse loop from Wimille – Wimereux

Hard

4.6

(82)

490

hikers

Dunes of the Slack – Fort d'Ambleteuse loop from Wimille – Wimereux

05:05

19.4km

150m

Hiking

Hard hike. Very good fitness required. Easily-accessible paths. Suitable for all skill levels. The starting point of the route is accessible with public transport.

Last updated: May 12, 2026

Tips

Your route passes through a protected area

Please check local regulations for:

Parc naturel régional des Caps et marais d'Opale

Waypoints

Start point

Train Station

Get Directions

1.58 km

Wimereux Beach

Highlight • Beach

Diverse beach - sand, rocks, cliffs - everything there.

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4.14 km

Sand Fences in the Dunes de la Slack

Highlight • Structure

Picket fences serve as coastal protection. They stabilize the dunes and protect them from erosion. The fence slows the wind, and sand collects around the pickets and settles behind the fence.

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4.37 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 …

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7.85 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 …

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9.20 km

Beach

13.2 km

Wooden Boardwalk Through the Dunes de la Slack

Highlight • Trail

Wooden footbridge allowing you to cross the marshy area of the Slack at the entrance to the dunes. This beautiful path crosses the entirety of the dunes of the Slack to the coast at the Wimereux golf course.

Translated by Google •

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13.9 km

Dune Viewpoint in Parc Naturel Régional des Caps et Marais d'Opale

Highlight • Viewpoint

Beautiful piece of dunes near a small bypass.

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14.9 km

Viewing Platform in the Dunes of Parc Naturel Régional des Caps et Marais d'Opale

Highlight • Viewpoint

The panoramic board is nice to orient yourself.

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19.4 km

End point

Train Station

Way Types & Surfaces

Way Types

11.5 km

4.27 km

1.92 km

1.27 km

239 m

146 m

Surfaces

9.75 km

4.44 km

2.67 km

1.04 km

981 m

478 m

Elevation

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

Weather

Saturday 6 June

17°C

13°C

14 %

Additional weather tips

Max wind speed: 29.0 km/h

to get more detailed weather forecasts along your route

Comments

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Dunes of the Slack – Fort d'Ambleteuse loop from Wimille – Wimereux

Wimereux Beach

Sand Fences in the Dunes de la Slack

Dunes of the Slack

Fort d'Ambleteuse

Passerelles en bois

Wooden Boardwalk Through the Dunes de la Slack

Dune Viewpoint in Parc Naturel Régional des Caps et Marais d'Opale

Viewing Platform in the Dunes of Parc Naturel Régional des Caps et Marais d'Opale

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