4.4
(127)
1,187
riders
94
rides
Mountain biking around Delettes features a landscape characterized by rolling hills, dense woodlands, and river valleys. The terrain offers a mix of singletrack and wider paths, with elevation changes suitable for various skill levels. Routes often follow the courses of local rivers like the Laquette and Lys, providing scenic views and diverse riding conditions. The region's natural features make it a suitable destination for exploring on two wheels.
Last updated: June 24, 2026
4.7
(3)
31
riders
68.0km
05:30
960m
960m
Hard mountain bike ride. Very good fitness required. Suitable for all skill levels.
4.0
(2)
29
riders
51.9km
04:02
660m
660m
Moderate mountain bike ride. Good fitness required. Suitable for all skill levels.

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5.0
(1)
27
riders
53.9km
04:27
790m
790m
Moderate mountain bike ride. Good fitness required. Suitable for all skill levels.
5.0
(1)
10
riders
33.6km
02:36
430m
430m
Moderate mountain bike ride. Good fitness required. Suitable for all skill levels.
5.0
(2)
13
riders
46.2km
03:05
310m
300m
Moderate mountain bike ride. Good fitness required. Suitable for all skill levels.
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Thérouanne was Sigeric's 77th stop on his return from Canturbey's pilgrimage to Rome. In the 19th century, this fortified town was a French enclave within the German Empire, but was razed by Charles V in 1553. On the hill north of the town are the remains of one of the first cathedrals built in the Gothic style in France. The famous Great God of Thérouanne, which adorned one of the portals, is now housed in Saint-Omer Cathedral.
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Leaving the village of Dohem via Rue du Paradis, the Via Francigena takes you along a pleasant tree-lined path.
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The small village of Delettes includes the hamlets of Upen d'Amont, Upen d'Aval, and Westrehem. Crossed by the Lys River, it boasts a pretty sluice mill built on the banks of the river.
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Thérouanne is stop 77 of Sigeric on his return journey from Canterbury to Rome. The town is also located on the historic road between Boulogne and Arras (Chaussée Brunehaut). In the 16th century, this fortified town was a French enclave within the German Empire, but was razed to the ground by Charles V in 1553. On the hill to the north of the town lie the remains of one of the first cathedrals built in the Gothic style in France. The famous Grand dieu de Thérouanne, which once adorned one of the portals, is now in the cathedral of St-Omer.
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At the entrance to Thérouanne is the site where a magnificent cathedral stood in the Middle Ages... Today, there is practically nothing left on the surface, but a walk in this park after visiting the Maison de l'archéologie allows you to better immerse yourself in the history of Thérouanne and imagine the splendor of the city in medieval times.
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The Rebecques ponds are fishing ponds, but they are no less beautiful to admire. They are open all year round, from sunrise to sunset.
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There are over 80 mountain bike trails around Delettes, offering a wide range of options for different skill levels. The komoot community has recorded 89 tours in the area.
Yes, Delettes offers a good selection of easier routes. Approximately 27 of the trails are rated as easy, making them suitable for beginners or those looking for a more relaxed ride. These often feature less challenging terrain and elevation changes.
Trail durations vary significantly. For example, a moderate route like the Woodland Singletrack – Thérouanne loop from Thérouanne is about 39.9 miles (64.2 km) and takes around 4 hours 37 minutes. Shorter options are also available, while more challenging routes can take 5 hours or more.
Many popular mountain bike trails in the region start from villages like Thérouanne, Erny-Saint-Julien, and Bomy. These locations often provide convenient access to the trail network and potential parking spots.
Yes, families can find suitable options. The region has a number of easy-rated trails that are generally less demanding, making them appropriate for family outings. Look for routes described as 'easy' or those that follow wider paths through woodlands and river valleys.
Absolutely. For experienced riders seeking a challenge, there are 4 difficult-rated mountain bike routes. An example is the Small bridge over the laquette loop from Erny-Saint-Julien, which is 42.2 miles (68.0 km) long with significant elevation changes, often taking around 5 hours 30 minutes to complete.
Many trails offer scenic views, particularly those that follow the courses of local rivers like the Laquette and Lys. The Pidou Mill loop from Thérouanne explores varied natural scenery and historical mill sites, while the Source of the Lys loop from Bomy offers beautiful river valley landscapes.
The area is highly rated by the komoot community, with an average score of 4.4 stars from over 130 reviews. Reviewers often praise the diverse terrain, which includes engaging singletrack sections, dense woodlands, and scenic river paths, suitable for various skill levels.
The terrain around Delettes is characterized by rolling hills, dense woodlands, and river valleys. You can expect a mix of singletrack and wider paths, with elevation changes that cater to different skill levels. Trails often follow river courses, providing varied riding conditions.
Yes, the region offers several points of interest. You might encounter historical sites like The Dome or Le Moulin Pidoux. Other attractions include the Moulin Espagnol d'Enquin les Mines and the Notre-Dame-de-Bon-Secours Church of Hallines, offering cultural stops during your ride.
Yes, many of the mountain bike trails around Delettes are designed as loops, allowing you to start and finish at the same point. Examples include the Woodland Singletrack – Thérouanne loop from Thérouanne and the Delettes – Dam loop from Erny-Saint-Julien.


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