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Road cycling routes
France
Hauts-De-France
Boulogne-Sur-Mer
Beuvrequen

Slack Estuary – Fort d'Ambleteuse loop from Beuvrequen

Routes
Road cycling routes
France
Hauts-De-France
Boulogne-Sur-Mer
Beuvrequen

Slack Estuary – Fort d'Ambleteuse loop from Beuvrequen

Easy

8

riders

Slack Estuary – Fort d'Ambleteuse loop from Beuvrequen

00:41

15.5km

120m

Road cycling

Easy road ride. Great for any fitness level. Mostly well-paved surfaces and easy to ride.

Last updated: June 17, 2026

Tips

Includes a segment in which cycling is not permitted

After 5.60 km for 221 m

Waypoints

A

Start point

Get Directions

1

6.76 km

Ambleteuse

Highlight • Settlement

2

7.38 km

Slack Estuary

Highlight • Other

It is a small coastal river that flows into the sea, near the fortress of Ambleteuse.
Although the Slack is modest today, it was much more imposing in the past, …

Translated by Google •

Tip by

3

7.48 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

4

7.83 km

Short stretch to the fort .

Translated by Google •

Tip by

5

9.53 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

B

15.5 km

End point

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Way Types & Surfaces

Way Types

11.8 km

1.15 km

1.01 km

881 m

637 m

Surfaces

14.9 km

301 m

207 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 9 July

27°C

18°C

0 %

Additional weather tips

Max wind speed: 28.0 km/h

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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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