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France
Ile-de-France
Pontoise

Ermont

The best walks and hikes around Ermont

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.

Best hiking trails around Ermont

  • The most popular hiking route is Château de Boissis – Bois de Boissy loop from Ermont, a 5.3 miles (8.6 km) trail that takes 2 hours 11 minutes to complete. This moderate loop explores local woodlands and passes by the Château de Boissis.
  • Another top favourite among local hikers is Parisis Water Tower – Rinvals Wood loop from Franconville - Le Plessis-Bouchard, a moderate 8.6 miles (13.9 km) path. This route guides hikers through Rinvals Wood and past the Parisis Water Tower.
  • Local hikers also love the Sannois Mill – View of La Défense (Paris) loop from Sannois, a 2.4 miles (3.9 km) trail leading through varied local scenery, often completed in about 1 hour 7 minutes.
  • Hiking around Ermont is defined by its accessible woodlands, historical landmarks, and gentle paths. The network offers options for different ability levels, from easy strolls to moderate excursions.
  • The routes in Ermont are highly rated by the komoot community with an average score of 4.4 stars from over 700 reviews. More than 4000 hikers have used komoot to explore Ermont's varied terrain.

Last updated: April 26, 2026

5.0

(7)

60

hikers

#1.

Château de Boissis – Bois de Boissy loop from Ermont

8.58km

02:11

30m

30m

Moderate hike. Good fitness required. Easily-accessible paths. Suitable for all skill levels.

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Moderate

Moderate hike. Good fitness required. Easily-accessible paths. Suitable for all skill levels.

Moderate
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3.5

(4)

19

hikers

Easy hike. Great for any fitness level. Easily-accessible paths. Suitable for all skill levels.

Easy

Easy hike. Great for any fitness level. Easily-accessible paths. Suitable for all skill levels.

Easy

Hard hike. Very good fitness required. Easily-accessible paths. Suitable for all skill levels.

Hard
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Popular around Ermont

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Tips from the Community

Cyril
September 21, 2025, Étang et Roselière de Parc Naturel

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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Top for mountain biking

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Very small but very cute castle in the middle of the forest

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Suard
March 3, 2025, Tour du Plumet

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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Frequently Asked Questions

How many hiking trails are available around Ermont?

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.

Are there easy hiking trails suitable for beginners or families in Ermont?

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.

Can I find circular hiking routes in Ermont?

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.

What kind of landscapes will I encounter on hikes in Ermont?

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.

Are there any specific viewpoints or natural attractions to look out for?

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.

What historical landmarks can be seen along the hiking trails?

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.

What do other hikers enjoy most about hiking in Ermont?

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.

Are there any longer or more challenging hikes available for experienced hikers?

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.

Are the hiking trails in Ermont dog-friendly?

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.

What is the typical duration for a hike in Ermont?

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.

Are there any trails that offer views of the Paris skyline?

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.

Can I access hiking trails in Ermont using public transport?

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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