3.0
(1)
7
riders
4
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Gravel biking around Harly offers routes characterized by waterways and historical landmarks. The region features paths alongside the Somme River and the Sambre-Oise Canal, providing flat to gently rolling terrain. These routes often pass through agricultural areas and offer views of local architecture, including a basilica. The landscape is generally open, with some sections potentially bordered by trees or small villages.
Last updated: May 6, 2026
3
riders
41.9km
02:29
270m
270m
Moderate gravel ride. Good fitness required. Mostly paved surfaces. Suitable for all skill levels.
3.0
(1)
1
riders
28.7km
01:38
220m
220m
Moderate gravel ride. Good fitness required. Mostly paved surfaces. Suitable for all skill levels.

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2
riders
28.1km
01:49
170m
170m
Moderate gravel ride. Good fitness required. Mostly paved surfaces. Suitable for all skill levels.
1
riders
15.2km
00:51
130m
130m
Easy gravel ride. Great for any fitness level. Mostly paved surfaces. Suitable for all skill levels.
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Popular around Harly
This is where the Somme River rises. Its name is traced back to Celtic origins and also gives its name to the department of the same name. At the time when Gaul was part of the Roman Empire, the river was called the Samara. It ends its approximately 245-kilometer-long river life in the Baie de Somme, where it flows into the English Channel.
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Completely constructed in white and black stone, the Basilica of Saint-Quentin is the second Gothic building in Picardy. Built between the end of the 12th and the end of the 15th centuries, it is best known as the burial place of the martyr Quentin, who gave it its name. Listed as a historical monument, the building boasts original architecture, with a porch tower over 34 meters high, a double transept, and a concentric choir. Inside, visitors are captivated by the ancient 260-meter-long labyrinth carved into the nave's paving. Stained glass windows installed at various times complement the artistic offerings of the Basilica of Saint-Quentin, particularly medieval stained glass windows in the 12th-century apse chapels. These depict episodes from the lives of the Virgin Mary and Saint Stephen.
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Beautiful surroundings walking route and maritime museum
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As a memorial to the many dead, such a "MONUMENT AUX MORTS" (usually called a "Central Memorial" or "War Memorial" in German-speaking countries) is still very important today. "Now, Lord, you let your servant depart in peace, as you have said..." it says in the so-called "Hymn of Simeon" (Luke's Gospel, Chapter 2, Verse 29). However, the people who are remembered here did not depart in peace, but became victims of war and tyranny. Therefore, the term "fallen memorial" is now sometimes used instead of the "war memorial" that was previously common in German. In the French-speaking world, however, this aspect of commemoration of the dead has long been included in the most commonly used term "MONUMENT AUX MORTS". Regardless of language and nation, such a memorial has two important and at the same time everlasting tasks: -1- to keep the memory of the suffering and horror of war alive, -2- and to remind people of the need to maintain peace in the long term.
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Parc de l'Isle in Saint-Quentin offers a variety of trails for different levels of difficulty, from flat, easy trails along the Somme to hilly, wooded routes in the nature reserve. You can also admire the flora and fauna of the park, which houses a free zoo, a farm and a conservation center. The park is open all year round, from 8 a.m. to 8 p.m. in summer and from 8 a.m. to 6 p.m. in winter. Whether you are a beginner or an expert, you will find at Parc d'Isle something to satisfy your tastes and your pace.
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The Saint-Quentin war memorial is a unique memorial dedicated to the city's soldiers who fell in combat during different wars. The monument is located near the train station and features a large granite wall with three bas-reliefs depicting scenes from 1557, 1870 and 1914-19181. You can admire the work of architect Paul Bigot and sculptors Henri Bouchard and Paul Landowski, who created this impressive structure in 1927. The monument is also a tribute to the resilience of the residents of Saint-Quentin, who endured the destruction and exodus caused by conflicts.
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The track runs along the Oise all the way, first in town, then between the fields and the barges. On arrival at the Croix Saint Ouen, you have to drive through the village and on small roads to catch up with the cycle paths inside the forest. It is best to start south of Compiègne in the ZAC de Mercières, near the swimming pool and the ice rink. The place is easy to spot. The walk is very nice and runs along the Oise. You always have to stay on your side.
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There are 4 dedicated no-traffic gravel bike trails detailed in this guide for the Harly area. These routes offer a mix of easy and moderate difficulties, perfect for enjoying the quiet countryside.
Yes, for beginners or those looking for a relaxed ride, the Canal Bridge loop from Saint-Quentin is an excellent choice. It's classified as easy and covers a distance of just over 15 km, making it very accessible.
The no-traffic gravel trails around Harly often follow canal paths and quiet rural roads, providing a smooth and enjoyable ride. You can expect mostly flat or gently rolling terrain, with some routes featuring historical tunnels and scenic waterways like the Somme and Oise rivers.
Absolutely! All the routes in this guide are circular, allowing you to start and end at the same point. For example, the Basilica of Saint Quentin – Riqueval Tunnel loop from Francilly-Selency offers a great circular experience, taking you through varied landscapes.
Many routes offer interesting sights. You can cycle along the Bike path along the Oise or the Canal cycling route. The Source of the Somme – Isle Park loop from Saint-Quentin takes you past Isle Park, and you'll find historical landmarks like the Basilique Saint-Quentin nearby.
For a longer, moderate challenge, consider the Basilica of Saint Quentin – Riqueval Tunnel loop from Francilly-Selency. This route spans nearly 42 km and includes a notable tunnel section, offering a rewarding ride for those seeking more distance.
The komoot community rates the trails in Harly with an average score of 3.0 stars. While based on a single rating, users generally appreciate the quiet, traffic-free nature of the routes, making them ideal for peaceful gravel biking experiences.
Yes, the Source of the Somme – Isle Park loop from Saint-Quentin is a great option. It allows you to explore the area around the source of the Somme river and enjoy the natural beauty of Isle Park, providing a refreshing escape into nature.
Many of the no-traffic gravel routes in Harly utilize the region's extensive canal network. The Sambre-Oise Canal – Berthénicourt lock loop from Le Thiolet is a prime example, offering a scenic ride alongside the canal and past historical locks.
The no-traffic gravel trails around Harly are generally quite flat, making them accessible for various fitness levels. The elevation gain typically ranges from around 130 meters for easier routes to about 270 meters for the longer, moderate trails, ensuring a comfortable ride without significant climbs.


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