4.4
(127)
1,237
riders
101
rides
Mountain biking around Cléty is characterized by its undulating landscapes, situated within the Artois high plateaus and the diverse Aa valley. The region features marly chalk formations, creating numerous dry valleys and temporary streams, alongside woods and former quarries. The terrain transitions from steeper, wooded northern slopes to gentler, cultivated southern slopes, offering varied environments for mountain bikers. This area provides a scenic backdrop for exploring the Pas-de-Calais department.
Last updated: May 11, 2026
4.7
(16)
125
riders
51.3km
04:06
730m
730m
Moderate mountain bike ride. Good fitness required. Advanced riding skills necessary.
4.0
(1)
56
riders
59.5km
04:58
880m
880m
Moderate mountain bike ride. Good fitness required. Suitable for all skill levels.

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5.0
(4)
62
riders
51.6km
04:10
760m
760m
Moderate mountain bike ride. Good fitness required. Advanced riding skills necessary.
4.6
(5)
43
riders
63.0km
04:59
720m
720m
Moderate mountain bike ride. Good fitness required. Advanced riding skills necessary.
5.0
(1)
30
riders
56.6km
04:26
700m
700m
Moderate mountain bike ride. Good fitness required. Suitable for all skill levels.
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1 km long and average gradient 9.4%, steepest 100m 14.9% ends at the top on an unpaved road, so those who want to cycle further are better off with gravel or VTT.
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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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There are over 100 mountain bike routes available around Cléty, offering a wide range of options for different skill levels and preferences. The nearby Lumbres mountain bike base alone features an extensive network of 13 marked circuits, totaling 450 km of trails.
The terrain around Cléty is characterized by undulating landscapes within the Artois high plateaus and the diverse Aa valley. You'll encounter marly chalk formations, dry valleys, temporary streams, woods, and former quarries. The region offers a mix of steeper, wooded northern slopes and gentler, cultivated southern slopes, providing varied environments from valleys and plateaus to meadows, forests, and riverbanks.
Yes, the area caters to various skill levels. While many routes are moderate, there are 25 easy trails available. The Lumbres mountain bike base, just 20 km from Saint-Omer, specifically includes options for family rides with smaller hills, ensuring there are suitable routes for less experienced riders.
The mountain bike trails around Cléty offer a range of difficulties: 25 are classified as easy, 74 as moderate, and 7 as difficult. This variety ensures that riders of all experience levels can find suitable challenges, from gentle family rides to routes with significant ascents up to 1,200 meters.
Many of the mountain bike routes around Cléty are designed as loops. For example, the Saint-Omer Valley – L'AA cycle path loop from Pihem is a moderate 63 km circular route, and the Thérouanne – Delettes loop from Pihem covers 56.6 km. These loops allow you to start and finish at the same point, exploring diverse landscapes along the way.
While mountain biking near Cléty, you can explore a region rich in natural and historical sites. The area is part of a ZNIEFF (Natural Zone of Ecological, Faunistic, and Floristic Interest) encompassing the hillsides of the upper Aa valley and the quarries of Cléty. The "La Roussie in Lumbres" circuit offers panoramic views of the Bléquin valley, including Mount Drionville. Nearby attractions include the impressive Saint-Omer Cathedral and the historic Moulin Espagnol d'Enquin les Mines.
While specific parking for trails directly in Cléty isn't detailed, the nearby Lumbres mountain bike base, a central hub for the region's trails, provides comprehensive services including parking facilities. This base is easily accessible and serves as a convenient starting point for many routes.
Information on direct public transport links to the specific trailheads around Cléty is limited. However, the region is part of the Caps et Marais d'Opale Regional Natural Park, which generally has some public transport options connecting towns. For detailed public transport information to the Lumbres mountain bike base or specific starting points, it's advisable to check local transport schedules.
The mountain bike trails around Cléty are highly regarded by the komoot community, with an average rating of 4.4 stars from over 130 reviews. Over 1,200 mountain bikers have used komoot to explore this varied terrain, often praising the undulating hills, woods, and river valleys that define the region's scenic backdrop.
Yes, the Lumbres mountain bike base, a key access point for many trails in the wider Cléty area, offers excellent facilities for mountain bikers. These include bike washing stations, inflation and repair facilities, showers, toilets, lockers, and changing rooms, ensuring a comfortable and convenient experience.
The diverse landscape of Cléty, with its woods and waterways, makes it suitable for mountain biking through much of the year. Spring and autumn generally offer pleasant temperatures and vibrant scenery. While specific seasonal recommendations aren't provided, be mindful that trails can become muddy after heavy rain, especially in wooded or valley areas.
Yes, the region offers several longer routes for experienced riders. For example, the Côte du mont a cheval – Pihem Ravine loop from Pihem is a challenging 59.5 km path with significant elevation gain. The Lumbres mountain bike base also features circuits up to 70 km in length, catering to those looking for extended rides.


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