4.6
(173)
973
hikers
92
hikes
Hiking around Ailly offers diverse landscapes within the Somme Valley, characterized by its riverine paths, extensive fields, and tranquil forests. The region features unique "larris," which are limestone hillsides providing elevated viewpoints over the valley's mosaic of ponds and marshes. Trails traverse varied terrain, including shaded woodlands and open agricultural areas, catering to different hiking preferences. This natural environment provides opportunities for exploring both the Somme River's branches and the distinct flora of the limestone-rich hills.
Last updated: June 21, 2026
5.0
(2)
12
hikers
13.8km
03:44
180m
180m
Moderate hike. Good fitness required. Easily-accessible paths. Suitable for all skill levels.
5.0
(1)
15
hikers
14.3km
03:48
140m
140m
Moderate hike. Good fitness required. Easily-accessible paths. Suitable for all skill levels.

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5.0
(1)
12
hikers
9.19km
02:31
140m
140m
Moderate hike. Good fitness required. Easily-accessible paths. Suitable for all skill levels.
5.0
(1)
10
hikers
12.7km
03:25
140m
140m
Moderate hike. Good fitness required. Easily-accessible paths. Suitable for all skill levels.
5.0
(1)
9
hikers
12.9km
03:25
130m
130m
Moderate hike. Good fitness required. Easily-accessible paths. Suitable for all skill levels.
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Magnificent view of the Château d'Acquigny (whose garden can be visited) and the Eure valley
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Be careful in winter you can be slippery because of dead leaves but great place
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Located on the border of the communes of Heudreville-sur-Eure and Acquigny, “Le Clos Saint-Mauxe”, a small clearing, is a symbolic place of the Christian faith. In the first centuries of our era, Saint-Mauxe, bishop of Italy, persecuted for his faith in God, took refuge in Gaul, accompanied by his brother Vénérand, deacon, and two priests Marc and Etherius. Pursued by the proconsul Sabinus from whom they had escaped in Italy, they were joined by their enemies in this clearing. Sabinus had the heads of Saint Mauxus and Saint Vénérand cut off... as well as eight of his own soldiers who had just been converted by the words and miracles of the holy bishop. This site became a place of fervor and devotion where processions were regularly organized, particularly during difficult times, for example during the plague of 1517 or the droughts of 1556 and 1785. According to historical records, miracles were even cited and an altar with a stone column was erected
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This work located in the town of Acquigny allowed the old Dreux-Rouen railway to cross the Eure.
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This castle is ideally placed at the confluence of the Eure and the Iton rivers. This stream was diverted from its bed to feed the moats of this beautiful building. It can be admired from the park gate.
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The Sainte-Cécile church is located in Acquigny, in the Eure. Built in the 16th century, it was remodeled in the 18th century. It is classified as a historical monument.
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The Château d'Acquigny was built at the request of Anne de Laval (cousin of the King of France Henri II and Dame-in-waiting to Queen Catherine de Medici), from 1557 with the criterion of inspiring the love that wore to her late husband, Louis de Silly. An original residence was then built: a plan combining the four initials of the couple (ALLS), for a facade of honor with decorative elements of great refinement, releasing all the love that the countess had for her husband. We then understand better why the park surrounding this elegant castle is also nicknamed “a love of garden”.
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There are over 100 hiking trails around Ailly, offering a wide range of options for all skill levels. You'll find 39 easy routes, 62 moderate trails, and 4 more challenging hikes to explore the diverse landscapes of the Somme Valley.
Hiking around Ailly offers a rich variety of landscapes. You can expect tranquil riverine paths along the Somme River and its branches, extensive fields, and peaceful forests like the Forêt d'Ailly. A unique feature of the region are the 'larris,' limestone hillsides that provide exceptional panoramic viewpoints over the valley's mosaic of ponds and marshes.
Yes, Ailly offers several easy trails perfect for beginners or families. For instance, the Old Railway Bridge loop from Acquigny is an easy 5.8 km route that provides a pleasant walk without significant elevation. Many paths along the 'Vieille Somme' are also ideal for peaceful family strolls.
The Somme Valley is beautiful throughout the year, but spring and autumn are particularly pleasant for hiking in Ailly. In spring, the 'larris' come alive with unique flora like orchids, while autumn offers stunning colors in the forests. Summer provides warm weather for exploring, and even winter can be enjoyable for crisp walks, though conditions may vary.
Yes, many routes incorporate historical landmarks and natural sights. You can discover impressive castles such as Acquigny Castle or Houetteville Castle. Some trails also lead to viewpoints like Notre-Dame de Bellegarde Viewpoint, offering expansive views of the valley.
The hiking trails around Ailly are highly regarded by the komoot community, with an average rating of 4.6 stars from over 150 reviews. Hikers often praise the diverse terrain, from serene river paths to scenic viewpoints, and the well-maintained nature of the routes.
Yes, many of the trails around Ailly are circular, allowing you to start and end at the same point. Examples include the Acquigny water mill – Acquigny Church loop from Acquigny, which explores historical landmarks, or the Château de Pinterville loop from Les Hauts Benniers, leading through rural landscapes.
Generally, dogs are welcome on many hiking trails in the Somme Valley. However, it's always advisable to keep them on a leash, especially in natural reserves, agricultural areas, or near wildlife. Please check specific trail regulations if you plan to visit a protected area.
The Somme Valley is rich in biodiversity. Keep an eye out for unique flora, especially orchids and thyme, on the 'larris' (limestone hillsides). The river, ponds, and marshes are home to various bird species and aquatic life. Lizards are also commonly found in the warmer, limestone-rich areas.
Parking is generally available near trailheads and in the villages surrounding Ailly-sur-Somme. Specific parking information can often be found on individual route descriptions on komoot, or by checking local signage in areas like Acquigny or Fontaine-Heudebourg, which serve as starting points for popular loops.
Absolutely. The 'larris' (limestone hillsides) are known for their elevated positions, providing spectacular 'belvederes' with panoramic views. The Notre-Dame de Bellegarde Viewpoint is one such spot where you can enjoy expansive vistas over the valley, its ponds, and marshes.
Yes, the region includes peaceful forests that offer shaded paths, ideal for nature breaks. Notable wooded areas include the Forêt d'Ailly and the Forêt de Bord-Louviers, providing a tranquil contrast to the open fields and riverine landscapes.


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