4.4
(172)
2,451
riders
282
rides
Road cycling in Forêt De Rosny, located in the Yvelines department near Paris, offers diverse landscapes for cyclists. The region features rolling woodlands, calcicole grasslands, and agricultural lands situated on the Chevry plateau. Elevations range from 35 meters to 143 meters, providing varied terrain for road cyclists. The forest is also known for its viewpoints overlooking the majestic loops of the Seine River.
Last updated: June 29, 2026
5.0
(2)
32
riders
63.6km
02:41
350m
350m
Moderate road ride. Good fitness required. Mostly well-paved surfaces and easy to ride.
4.7
(3)
46
riders
42.4km
01:46
220m
220m
Easy road ride. Great for any fitness level. Mostly well-paved surfaces and easy to ride.

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13
riders
83.8km
04:32
1,130m
1,130m
Hard road ride. Very good fitness required. Mostly well-paved surfaces and easy to ride.
5.0
(3)
16
riders
22.6km
01:01
70m
70m
Easy road ride. Great for any fitness level. Mostly well-paved surfaces and easy to ride.
5.0
(1)
14
riders
Hard road ride. Very good fitness required. Mostly well-paved surfaces and easy to ride.
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Maybe the oldest medieval small castle still in an almost original state
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The descent is very nice on a road bike
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Lots of beautiful things to see in this part of Vexin
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A magnificent view of the castle and a loop of the Seine
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Beautiful castle on the banks of the Seine
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Plan to have good brakes for the descent!
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Forêt de Rosny offers a diverse landscape for road cyclists. You'll encounter rolling woodlands, calcicole grasslands, and agricultural lands situated on the Chevry plateau. The elevation ranges from 35 meters to 143 meters, providing varied terrain with some engaging climbs and descents.
Yes, Forêt de Rosny has routes suitable for various skill levels, including beginners. There are 58 easy road cycling routes available. An example of an easier route is the Promenade des Roches Blanches loop from Rosny-sur-Seine, which is 17.2 miles (27.7 km) long with moderate elevation changes.
For experienced road cyclists seeking a challenge, Forêt de Rosny offers 29 difficult routes. A notable challenging option is the Notre-Dame Church, Vétheuil – La Roche-Guyon Castle loop from Bonnières. This route spans 66.4 miles (106.9 km) and features significant elevation gains, often taking around 5 hours to complete.
The region is renowned for its magnificent viewpoints, especially the Belvédère de Châtillon, which offers exceptional panoramas over the majestic loops of the Seine River (Guernes and Moisson loops). The forest itself is a Natura 2000 site, rich in biodiversity with various tree species and wildlife, making for a scenic ride.
Yes, Forêt de Rosny is home to several historical attractions. You can discover the ancient Chêne Mademoiselle, an oak tree dating back to the 16th century, and the Kiosque de Rosny, a historical vestige from the 1900 Universal Exhibition. The forest also contains the ruins of the Château des Beurons, built around 1615.
There are over 280 road cycling routes available in Forêt de Rosny on komoot, catering to various difficulty levels from easy to difficult. This extensive network ensures plenty of options for exploration.
The road cycling routes in Forêt de Rosny are highly rated by the komoot community, with an average score of 4.4 stars from over 100 reviews. Cyclists often praise the varied terrain, the scenic views over the Seine River, and the historical landmarks encountered along the way.
Yes, Forêt de Rosny offers several longer routes. For example, the Giverny – Tourelles Castle loop from Rosny-sur-Seine is a moderate 54.7 miles (88.1 km) path that provides extensive views of the Seine Valley and passes by historical sites.
The diverse landscapes and natural beauty of Forêt de Rosny make it appealing throughout much of the year. Spring and autumn generally offer pleasant temperatures and beautiful scenery, with spring bringing blooming flora and autumn showcasing vibrant fall colors. Summer is also suitable, though it can be warmer.
Many of the road cycling routes in Forêt de Rosny are designed as loops, allowing you to start and end at the same point. An example is the popular La Roche-Guyon Castle – Giverny loop from Rosny-sur-Seine, a 47.5 miles (76.4 km) trail that explores scenic surroundings and historical landmarks.
While road cycling often involves shared roads, some of the easier routes in Forêt de Rosny might be suitable for families with older children who are comfortable cycling on roads. It's always recommended to check the specific route details and difficulty before heading out with family.
Specific parking information for individual routes is often detailed on their respective komoot pages. Generally, you can look for parking in towns and villages bordering the forest, such as Rosny-sur-Seine or Bonnières, which serve as common starting points for many routes.
Yes, the towns and villages surrounding Forêt de Rosny, such as Rosny-sur-Seine, Bonnières, and areas near Giverny, offer various amenities including cafes, restaurants, and shops where you can stop for refreshments or a meal during your ride.


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