4.3
(3)
33
riders
6
rides
Gravel biking around Delettes offers routes through the varied landscape of the Pas-de-Calais department in France. The region is characterized by its serene natural environment, including the Lys River, woodlands, and streams. Riders can expect a mix of vast agricultural plains and rolling countryside, particularly within the Lys Valley, which provides a scenic backdrop for cycling. These areas feature a combination of flat stretches and gentle, regular climbs, suitable for no traffic gravel bike trails.
Last updated: July 5, 2026
6
riders
47.0km
02:48
200m
200m
Moderate gravel ride. Good fitness required. Mostly paved surfaces. Suitable for all skill levels.
3
riders
33.4km
02:26
390m
390m
Moderate gravel ride. Good fitness required. Mostly paved surfaces. Suitable for all skill levels.

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5
riders
52.6km
04:11
770m
770m
Hard gravel ride. Very good fitness required. Mostly paved surfaces. Suitable for all skill levels.
4
riders
55.9km
04:11
680m
680m
Hard gravel ride. Very good fitness required. Mostly paved surfaces. Suitable for all skill levels.
5.0
(1)
3
riders
32.1km
02:09
390m
390m
Moderate gravel ride. Good fitness required. Mostly paved surfaces. Suitable for all skill levels.
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Popular around Delettes
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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Founded in 1889, this abbey was built in the Gothic style. Listed as a Historic Monument, it consists of several buildings, including two castles. Today, it is home to around twenty Benedictine nuns of all ages. The monastery is partially open to the public: the abbey church, parlor, and shop are accessible.
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The Pont de Thiennes is a traffic bridge located on the Leie, connecting the municipalities of Thiennes and Aire-sur-la-Lys. The bridge was inaugurated in 2014. It is built of Soignies granite and was financed by the state (33.9%) for war damage, by the department of Pas-de-Calais (33.05%) and by the department of Nord (33.05%). The bridge is equipped with a lifting system to allow the passage of boats.
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From 1859 onwards, the permanent church was built and in 1860 the tower was built. In 1865 the choir was restored and in 1866 a new sacristy was built. This church was consecrated in 1872. The stained glass windows of this church show the coats of arms of the bishops of the former diocese of Thérouanne. They were installed in 1901-1902.
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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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The neo-Gothic church was built before 1597 and replaced another building from the 11th century, which stood near the current chapel of Notre-Dame des Affligés. It was partially rebuilt in 1855. The tower dates from 1683. The originality of this construction lies in the fact that the bell tower is not above the entrance door, but above the choir. The door is simply formed by a pointed arch decorated with a pentacle. The first two bays of the nave are built of red brick and the last two in chalk. The four bays of the nave also have a pointed arch. The bell tower is formed by a gable wall that projects above the nave. The buttresses on this side are placed in line with the wall, creating a flat surface. The buttresses of the bell tower on the choir side are well placed on the corners
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There are 6 dedicated no-traffic gravel bike trails around Delettes featured in this guide. These routes offer a mix of moderate and difficult options, ensuring a quiet and enjoyable ride away from vehicular traffic.
The terrain around Delettes is quite varied. You'll encounter a blend of natural beauty, including woodlands and streams, especially along the Lys River. The broader Pays de Saint-Omer region features vast agricultural plains and rolling countryside, offering both flat stretches and gentle, regular climbs. This mix provides an engaging backdrop for gravel cycling.
Yes, for experienced riders seeking a challenge, there are several difficult routes. For instance, the Saint-Omer Valley – Pihem Ravine loop from Pihem covers over 52 km with significant elevation gain, and the Saint Martin Church – Saint-Léger Church, Cléty loop from Pihem is another demanding option at nearly 56 km.
The routes around Delettes offer glimpses of the region's history and natural beauty. You might pass by historic mills like Le Moulin Pidoux or the Paper House. The Moulin Espagnol d'Enquin les Mines is another notable historical site. These points of interest add a cultural dimension to your ride.
Absolutely. For a rewarding ride without extreme difficulty, consider the Château de la motte au bois – The Thiennes Bridge loop from Roquetoire, which is a moderate 47 km route. Another great option is the Quelmes – Nice view with boules court loop from Setques, offering scenic views over 33 km.
The region's rolling countryside and woodlands are beautiful throughout the year. Spring and autumn offer pleasant temperatures and vibrant scenery, making them ideal for gravel biking. Summer can also be enjoyable, especially on shaded routes, while winter rides can be serene, though some paths might be muddier.
While this guide features routes primarily rated moderate to difficult, the 'no traffic' aspect makes them inherently safer for families with older children or those comfortable with longer distances. For younger families, it's advisable to check the specific route details for distance and elevation to ensure it matches their capabilities.
The komoot community rates the routes around Delettes highly, with an average score of 4.3 stars. Riders often praise the quiet, car-free nature of the trails, the diverse landscapes, and the opportunity to explore the picturesque Lys Valley and its historical sites away from busy roads.
Yes, all the routes featured in this guide are circular, allowing you to start and finish at the same point. This makes planning your ride and logistics, such as parking, much simpler. Examples include the Pihem Ravine – Le Moulin Pidoux loop from Heuringhem.
Many of the routes start from villages or towns like Roquetoire, Setques, Pihem, or Heuringhem. These locations typically offer public parking facilities, often near the starting points of the trails. It's always a good idea to check the specific tour details on komoot for recommended parking spots.
The region is characterized by its serene natural environment. You'll often find yourself cycling alongside the Lys River, through lush woodlands, and across agricultural plains. The varied landscape provides a beautiful backdrop, with opportunities to enjoy the verdant scenery of the Lys Valley and the rolling countryside.


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