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Routes
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France
Hauts-De-France
Boulogne-Sur-Mer
Bazinghen

La Slack Lock – Fort d'Ambleteuse loop from Bazinghen

Routes
Running trails & routes
France
Hauts-De-France
Boulogne-Sur-Mer
Bazinghen

La Slack Lock – Fort d'Ambleteuse loop from Bazinghen

Moderate

4.5

(2)

17

runners

La Slack Lock – Fort d'Ambleteuse loop from Bazinghen

01:17

12.3km

90m

Running

Moderate run. Good fitness required. Mostly paved surfaces. Suitable for all skill levels.

Last updated: May 10, 2026

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

Get Directions

1.63 km

La Slack

Lake

2

3.39 km

La Slack Lock

Highlight • Other

The Slack is a small coastal river, which flows into the sea, near Fort Ambleteuse.
Although modest today, the Slack was much more imposing in the past, when the gravel …

Translated by Google •

Tip by

3

3.44 km

Slack River Path

Highlight • Trail

The long slack

Translated by Google •

Tip by

4

4.71 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 …

Translated by Google •

Tip by

5

5.04 km

Short stretch to the fort .

Translated by Google •

Tip by

B

12.3 km

End point

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Way Types & Surfaces

Way Types

7.20 km

3.51 km

1.43 km

113 m

< 100 m

Surfaces

9.48 km

1.92 km

439 m

263 m

206 m

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Elevation

Elevation

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

Highest point (60 m)

Lowest point (10 m)

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Weather

Powered by Foreca

Friday 26 June

26°C

17°C

31 %

Additional weather tips

Max wind speed: 13.0 km/h

to get more detailed weather forecasts along your route

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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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