4.7
(111)
514
hikers
62
hikes
Hiking around Ermenonville offers diverse natural landscapes within the Ermenonville Forest, a key part of the Massif des Trois Forêts. The terrain is characterized by sandy soils, heather undergrowth, and Scots pines, creating a distinctive environment. Hikers encounter unique geological formations, including large sandstone blocks and "sandy moors" reminiscent of coastal dunes. The region also features tranquil lakes, ponds, and historic parks like Parc Jean-Jacques Rousseau, providing varied scenery for outdoor activities.
Last updated: July 7, 2026
5.0
(7)
24
hikers
23.3km
06:07
180m
180m
Hike the difficult 14.5-mile Abbaye de Chaalis loop from Ermenonville, exploring sandy forests, historic abbey ruins, and Jean-Jacques Rouss
3.8
(4)
15
hikers
Moderate hike. Good fitness required. Mostly accessible paths. Sure-footedness required.

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4.5
(8)
25
hikers
10.3km
02:45
110m
110m
Moderate hike. Good fitness required. Easily-accessible paths. Suitable for all skill levels.
5.0
(8)
26
hikers
14.0km
03:41
130m
130m
Moderate hike. Good fitness required. Easily-accessible paths. Suitable for all skill levels.
5.0
(2)
5
hikers
4.67km
01:14
40m
40m
Easy hike. Great for any fitness level. Easily-accessible paths. Suitable for all skill levels.
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Spanning over 3,300 hectares, the Ermenonville forest, along with those of Halatte and Chantilly, forms the vast Trois Forêts massif. Once owned by the monks of Chaalis and other nearby abbeys, it is now renowned for its moors, Scots pines, and sandy soil, home to rare wildlife such as the European nightjar and the praying mantis.
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Pine trees, sand, ferns galore. In short, you're transported elsewhere and breathe in the air of the Landes...
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Beautiful washhouse in a beautiful location. Located between Jean Jacques Rousseau Park and Ermenonville Castle.
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This castle is a very pretty place full of charm which according to Wikipedia dates from the 18th century and whose origins date back to the year 987!!!!!
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Perfect setting in Jean Jacques Rosseau Park to rest your feet while enjoying a picnic
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Ermenonville offers a wide variety of hiking experiences with over 60 routes. These trails cater to all skill levels, from easy strolls to more challenging long-distance hikes.
The Ermenonville Forest is characterized by its distinctive sandy soils, heather undergrowth, and majestic Scots pines. You'll encounter unusual large sandstone blocks, such as the prominent Witch Stone (Pierre Sorcière), and areas known as 'sandy moors' or even a 'sea of sand' (La Mer de Sable), which create a landscape reminiscent of coastal dunes.
Yes, many trails pass by significant historical sites. You can explore the grounds of Chaalis Abbey, a historic site with ruins, a museum, and gardens. The Château d'Ermenonville and the romantic Parc Jean-Jacques Rousseau, with its follies and picturesque landscapes, are also accessible on various routes.
The komoot community highly rates the hiking experience in Ermenonville, with an average score of 4.6 stars from over 90 reviews. Hikers frequently praise the diverse natural landscapes, the unique sandy forest terrain, and the opportunity to combine nature walks with visits to historical attractions like Chaalis Abbey and the Château d'Ermenonville.
Yes, Ermenonville offers 22 easy routes perfect for families or those seeking a relaxed walk. A good example is the Ermenonville Castle loop from Ermenonville, which is 6.5 km long and explores the castle grounds and surrounding forest.
Many of the trails in Ermenonville are designed as loops, allowing you to start and end at the same point. For instance, the Forest and castle of Ermenonville — loop from in the Oise-Pays de France regional natural park is a popular moderate circular route exploring the forest and château grounds.
Ermenonville is suitable for hiking year-round. The sandy soil provides an advantage, making trails easier to navigate even in winter. Spring and autumn offer beautiful foliage, while summer is pleasant under the forest canopy. The diverse flora, including pine forests and heather, ensures a constantly engaging experience.
The Ermenonville Forest is generally welcoming to dogs, but it's always advisable to keep them on a leash, especially to protect local wildlife and ensure the comfort of other hikers. Specific rules may apply in certain protected areas or within the grounds of attractions like Parc Jean-Jacques Rousseau, so check local signage.
Yes, the diverse ecosystem of the Ermenonville Forest provides opportunities for wildlife spotting. Keep an eye out for various bird species, small mammals, and other forest creatures that inhabit the pine forests, heather, and ferns.
Many trailheads around Ermenonville, particularly those leading into the forest or near major attractions like Chaalis Abbey and the Château d'Ermenonville, offer designated parking areas. It's recommended to check specific route details for parking information before your hike.
Ermenonville and its surrounding villages offer options for refreshments and meals. You'll find cafes and restaurants in the main town of Ermenonville, and some attractions like Chaalis Abbey may have facilities available, especially during peak season.
More difficult trails, such as the Chaalis Abbey and Ermenonville Forest Loop, involve longer distances (up to 23 km) and moderate elevation changes. While the sandy soil generally makes for easier walking, these routes require a good level of fitness and can take several hours to complete.


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