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Hiking trails & Routes

Hauts-De-France

Observatory 4 – Hable d'Ault Observatory loop from Cayeux-sur-Mer

Hiking trails & Routes

Hauts-De-France

Observatory 4 – Hable d'Ault Observatory loop from Cayeux-sur-Mer

Easy

4.5

(22)

168

hikers

Observatory 4 – Hable d'Ault Observatory loop from Cayeux-sur-Mer

01:59

7.86km

10m

Hiking

Easy hike. Great for any fitness level. Easily-accessible paths. Suitable for all skill levels. The starting point of the route is accessible with public transport.

Last updated: October 7, 2026

Tips

Your route passes through a protected area

Please check local regulations for:

Parc naturel régional Baie de Somme Picardie Maritime

Waypoints

A

Start point

Bus stop

824 m

Beach

Beach

2

2.35 km

Cayeux-sur-Mer Beach

Highlight • Beach

3

4.37 km

Observatory 5

Highlight • Viewpoint

4

4.62 km

Observatory 4

Highlight • Other

5

4.79 km

Henson Horses of Hâble d'Ault

Highlight • Natural

15 km route in the Hâble (bird reserve, Henson horses in pasture, tranquility)..... for the journey time: here it is Nordic walking...allow a little more for the walk.

Translated by Google •

Tip by

6

5.06 km

Observatory 2

Highlight • Other

7

5.27 km

Hable d'Ault Observatory

Highlight • Viewpoint

Beautiful ornithological reserve

Translated by Google •

Tip by

8

5.52 km

Blockhaus of the Baie de Somme

Highlight • Monument

9

6.55 km

South Beacon Monument

Highlight • Monument

B

7.86 km

End point

Bus stop

Way Types & Surfaces

Way Types

6.90 km

907 m

< 100 m

Surfaces

5.19 km

1.64 km

901 m

143 m

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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

Tuesday 20 October

14°C

9°C

84 %

Additional weather tips

Max wind speed: 51.0 km/h

to get more detailed weather forecasts along your route

Comments

September 23, 2026,Strandrunde von Cayeux-sur-Mer

Beautiful nature, the path runs mostly on coarse gravel.

Showing Translation

June 19, 2025,2025-06-19 Cayeux-sur-Mer, Vogelrunde

The Hable d'Ault Bird Reserve encompasses the freshwater lagoons behind the dike. A beautiful hike with a wide variety of birds.

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