4.4
(781)
4,960
hikers
416
hikes
Hiking around Ermont offers access to a landscape characterized by gentle terrain, woodlands, and local points of interest. The region features a network of paths that traverse through areas like Bois de Boissy and Rinvals Wood. Elevation changes are generally modest, making many routes accessible for various fitness levels. Hikers can explore historical sites such as the Château de Boissis and the Sannois Mill, with some trails providing views towards La Défense in Paris.
Last updated: April 26, 2026
5.0
(7)
60
hikers
8.58km
02:11
30m
30m
Moderate hike. Good fitness required. Easily-accessible paths. Suitable for all skill levels.
15
hikers
Moderate hike. Good fitness required. Easily-accessible paths. Suitable for all skill levels.

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3.5
(4)
19
hikers
4.85km
01:15
20m
20m
Easy hike. Great for any fitness level. Easily-accessible paths. Suitable for all skill levels.
4.0
(1)
3
hikers
3.90km
01:07
90m
90m
Easy hike. Great for any fitness level. Easily-accessible paths. Suitable for all skill levels.
4.0
(1)
3
hikers
29.4km
07:56
390m
390m
Hard hike. Very good fitness required. Easily-accessible paths. Suitable for all skill levels.
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Beautiful hike but some paths are not easy to find. I have the impression that some paths are not used enough to remain visible.
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Very small but very cute castle in the middle of the forest
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It's a shame that the forestry machines don't restore the site to its original state.
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Entrance to the Cormeilles woods via the spring and the fountains a little higher up.
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The Butte des Châtaigners, a great viewpoint!
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This tower was built in 1863 for the fantasy and vanity of the wealthy Baron Joseph Louis Léopold Double, descendant of a noble family whose districts date from the 14th century. It is used as a hunting venue. The Baron, as an informed collector, seeks above all pieces that belonged to historical figures and brings together a good number of art objects and furniture from the castles of Versailles, Fontainebleau, Rambouillet, etc. Through his marriage to Pauline Eugénie Collin, the great-granddaughter of Doctor du Mangin, he became the owner of the Château de Saint Prix. Wishing to establish a fiefdom worthy of his fortune, he bought the woods located in the commune from the successors of Baroness de Feuchères. Baron Double designed his property in keeping with the taste of the time: footbridge connecting his park to the new estate, pilasters marked with his initials at the entrance to the paths, rotunda and various underground passages under the Route des Parquets, artificial cave, canals and retention basin at the Marie pond, chalet, Chinese kiosk, and three towers of which the Plumet tower is, today, the only survivor. The Plumet Tower was restored in the early 2000s by France Télécom, a mobile telephone operator, following the installation of a relay antenna at its summit.
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For the Cross, it's worth the detour and the hunting castle. 1, passage is obligatory
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There are over 400 hiking routes around Ermont, offering a wide variety of options for different preferences and skill levels. These trails traverse woodlands, local points of interest, and historical sites.
Yes, Ermont features many easy hiking trails perfect for beginners and families. Over 200 routes are classified as easy, characterized by gentle terrain and modest elevation changes. A good example is the Château de Boissis loop from Argenteuil, which is an easy 3-mile (4.8 km) hike.
Yes, many of the hiking routes around Ermont are circular, allowing you to start and end at the same point. A popular option is the Château de Boissis – Bois de Boissy loop from Ermont, which is a moderate 5.3-mile (8.6 km) trail exploring local woodlands and passing by the Château de Boissis.
Hikes in Ermont primarily take you through accessible woodlands like Bois de Boissy and Rinvals Wood. The terrain is generally gentle, with modest elevation changes. You'll also encounter local points of interest, historical landmarks, and some trails offer views towards La Défense in Paris.
Yes, several trails offer rewarding views and natural features. You can find routes that provide views towards La Défense in Paris, such as the Sannois Mill – View of La Défense (Paris) loop from Sannois. Other notable natural highlights in the wider area include the Singletrack along the Marais de Stors and the Saint Radegonde Fountain.
The region around Ermont is dotted with historical landmarks. You can explore sites like the Château de Boissis and the Sannois Mill. The Château de Boissis – Bois de Boissy loop from Ermont is an excellent route to experience one of these historical sites.
The hiking routes in Ermont are highly rated by the komoot community, with an average score of 4.4 stars from over 700 reviews. Hikers often praise the accessible woodlands, the gentle paths suitable for various abilities, and the opportunity to discover local historical landmarks.
While Ermont is known for its gentle terrain, there are some longer, moderate routes for those seeking a bit more challenge. For example, the Parisis Water Tower – Rinvals Wood loop from Franconville - Le Plessis-Bouchard is a moderate 8.6-mile (13.9 km) path that guides hikers through Rinvals Wood.
Many of the woodland trails around Ermont are generally dog-friendly, especially if your dog is well-behaved and kept on a leash. It's always a good idea to check local signage for any specific restrictions in certain areas or nature reserves.
Hike durations in Ermont vary widely depending on the route and your pace. Many easy trails can be completed in 1-2 hours, such as the Sannois Mill – View of La Défense (Paris) loop from Sannois, which takes about 1 hour 7 minutes. Longer, moderate routes can take 3-4 hours or more.
Yes, some trails in the Ermont area provide unique views towards La Défense in Paris. The Sannois Mill – View of La Défense (Paris) loop from Sannois is specifically known for offering these scenic urban vistas amidst natural surroundings.
Given Ermont's proximity to urban areas, many trailheads are often accessible via public transport, particularly train or bus services from nearby towns. It's recommended to check local transport schedules and maps for the specific trailhead you plan to visit.


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