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Long Castle – Around the Long lock loop from Fontaine-sur-Somme

Routes

Hiking trails & Routes

Long Castle – Around the Long lock loop from Fontaine-sur-Somme

Moderate

4.8

(12)

hikers

Long Castle – Around the Long lock loop from Fontaine-sur-Somme

03:06

12.2km

30m

Hiking

Moderate hike. Good fitness required. Easily-accessible paths. Suitable for all skill levels. The starting point of the route is right next to a parking lot.

Last updated: June 21, 2026

Tips

Your route passes through a protected area

Please check local regulations for:

Parc naturel régional Baie de Somme Picardie Maritime

Waypoints

Start point

Parking

Get Directions

1.42 km

Étang des Provisions

Lake

5.92 km

Le grand marais

Lake

7.86 km

Long Hydroelectric Power Plant

Highlight • Monument

Located on a branch of the Somme, the Long hydropower plant is one of the rare examples in France of small energy production units built before 1914. Classified as a …

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7.98 km

Propeller of the Lancaster bomber ND689 KMO

Highlight • Other

Crashed at Long on 20 May 1944

Recovered on 12 September 1998

These two important parts were recovered in September 1998 from the pond where the Lancaster was damaged after being shot down.

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8.75 km

Long Castle

Highlight • Castle

Château de Long is an 18th century castle located in the Somme valley. You can admire the architecture of pink bricks and white stones, the sculpted and painted decorations, the …

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8.95 km

Around the Long lock

Highlight • Structure

The private property of Long, open to visitors, is located in the heart of the Somme between Abbeville and Amiens. Classified as a historic monument, the building, dating from the …

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9.86 km

Accessible Viewpoint at Parc naturel régional Baie de Somme Picardie Maritime

Highlight • Viewpoint

10.5 km

You can use this rustic picnic bench and grab a bite to eat while admiring the flora and fauna, especially the birds that inhabit the area. It’s a peaceful and picturesque destination for a relaxing picnic with a view.

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11.2 km

Viewpoint

Highlight • Other

12.2 km

End point

Parking

Way Types & Surfaces

Way Types

6.79 km

4.00 km

564 m

461 m

381 m

Surfaces

3.55 km

2.79 km

2.47 km

2.46 km

931 m

Elevation

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

Weather

Friday 26 June

30°C

16°C

46 %

Additional weather tips

Max wind speed: 14.0 km/h

to get more detailed weather forecasts along your route

Comments

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Long Castle – Around the Long lock loop from Fontaine-sur-Somme

The Somme River

Long Hydroelectric Power Plant

Propeller of the Lancaster bomber ND689 KMO

Long Castle

Around the Long lock

Accessible Viewpoint at Parc naturel régional Baie de Somme Picardie Maritime

Picnic with a view

Viewpoint

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