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France
Ile-de-France
Sarcelles

Jagny-Sous-Bois

The best walks and hikes around Jagny-Sous-Bois

4.6

(435)

2,244

hikers

253

hikes

Hiking around Jagny-Sous-Bois offers diverse terrain within the Val-d'Oise department. The area is characterized by its elevated position on the northern flank of the Mareil-en-France hill, providing views over the Ysieux valley. Nearby, the Forêt Domaniale de Carnelle presents extensive woodlands and varied landscapes, contributing to the region's hiking appeal. The Plateau de Thimecourt also features prominently in local routes, offering additional exploration opportunities.

Best hiking trails around Jagny-Sous-Bois

  • The most popular hiking route is Plateau de Thimecourt Fosses loop…

Last updated: July 1, 2026

4.0

(1)

15

hikers

#1.

Plateau de Thimecourt Fosses loop from Le Plessis-Luzarches

7.44km

02:00

90m

90m

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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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

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

Easy
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Tips from the Community

la Pioute
February 8, 2025, Abbaye d'Hérivaux

very good course for trail training

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Thimecourt Plain in Fosses

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Flat land

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Paul_C
September 18, 2023, Abbaye d'Hérivaux

Hérivaux Abbey is a former Augustinian abbey founded in the 12th century. The abbey was once a thriving religious center, but it was partially destroyed during the French Revolution by Benjamin Constant, who purchased it as a national asset.

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2

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Very nice place, calm, soothing

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Take a look at the Abbey of Hérivaux.

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A 3-meter-high isolated menhir, made of sandstone, with a typical shark's fin shape, suggesting that a part has been broken. Accessible by walking along the wood in the field, it is visible from the field or the woods.

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Nice descent to be careful! Lots of stones and pebbles. Technical

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Frequently Asked Questions

How many hiking trails are available around Jagny-sous-Bois?

There are over 200 hiking routes in and around Jagny-sous-Bois. These trails cater to various fitness levels, from easy walks to more challenging excursions.

What kind of terrain can I expect on hikes near Jagny-sous-Bois?

Hikes around Jagny-sous-Bois offer diverse terrain. You'll find elevated positions with panoramic views over the Ysieux valley, varied landscapes on the Butte de Mareil-en-France, and extensive woodlands within the nearby Forêt Domaniale de Carnelle and Forêt de Coye. The Plateau de Thimecourt also features prominently, providing varied paths for exploration.

Are there easy hiking options suitable for beginners or families?

Yes, Jagny-sous-Bois offers many easy hiking options. Over 100 routes are classified as easy, perfect for beginners or families. An example is the Hérivaux Abbey – Plateau de Thimecourt Fosses loop from Lassy, which is 4.3 miles (6.9 km) and combines natural exploration with a visit to a historic site.

Are there any circular hiking routes in the area?

Many of the trails around Jagny-sous-Bois are circular, allowing you to start and end at the same point. For instance, the popular Plateau de Thimecourt Fosses loop from Le Plessis-Luzarches is a 4.6-mile (7.4 km) circular route exploring the varied terrain of the Plateau de Thimecourt.

What interesting landmarks or attractions can I see along the hiking trails?

Several hiking routes incorporate historical and natural attractions. You can visit the historic Abbey of Hérivaux, which is part of routes like the Hérivaux Abbey – Plateau de Thimecourt Fosses loop from Lassy. Other notable nearby attractions include the Royaumont Abbey, various castles such as Pontarmé Castle, and natural features like the Blue Lake of Carnelle.

Are the hiking trails around Jagny-sous-Bois dog-friendly?

Generally, the natural areas and forest trails around Jagny-sous-Bois are dog-friendly, making it a great place to hike with your canine companion. However, it's always advisable to keep dogs on a leash, especially in protected areas or near wildlife, and to respect local signage.

What do other hikers enjoy most about hiking in Jagny-sous-Bois?

The area is highly rated by the komoot community, with an average score of 4.6 stars from over 400 reviews. Hikers often praise the varied terrain, the scenic views over the Ysieux valley, and the peaceful atmosphere of the extensive woodlands in the Forêt Domaniale de Carnelle.

Are there any challenging hikes for experienced hikers?

Yes, for experienced hikers seeking a challenge, there are routes classified as difficult. For example, the Plateau de Thimecourt Fosses loop from Jagny-sous-Bois is a 12.5-mile (20.2 km) route with significant elevation gain, requiring very good physical condition.

What is the best time of year to go hiking in Jagny-sous-Bois?

Jagny-sous-Bois offers pleasant hiking opportunities throughout much of the year. Spring and autumn provide comfortable temperatures and beautiful scenery with blooming flowers or vibrant fall foliage. Summer is also suitable, especially for shaded forest trails. Winter hiking is possible, but trails may be muddy or slippery, so appropriate gear is recommended.

Is there parking available near the trailheads?

Yes, many trailheads in and around Jagny-sous-Bois, particularly those starting from villages like Le Plessis-Luzarches, Lassy, or Bellefontaine, offer designated parking areas. It's always a good idea to check the specific route details on komoot for parking information related to your chosen trail.

Can I reach hiking trails near Jagny-sous-Bois using public transport?

While Jagny-sous-Bois itself is a smaller commune, public transport options may be available to nearby towns that serve as starting points for hikes. For detailed information on local bus services or train connections to the broader Val-d'Oise region, it's best to consult local transport authorities or the official website of the commune, such as carnelle-pays-de-france.fr.

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