4.3
(7)
44
riders
5
rides
Gravel biking around Saint-Illiers-Le-Bois offers a network of routes through varied landscapes. The region features a mix of woodlands, open countryside, and paths alongside waterways, providing diverse terrain for gravel cyclists. Elevation changes are generally moderate, with some routes including more significant climbs over hills and through valleys. The area is suitable for exploring on two wheels, with trails connecting villages and natural features.
Last updated: May 23, 2026
4.0
(2)
8
riders
104km
06:38
610m
610m
Hard gravel ride. Very good fitness required. Mostly paved surfaces. Suitable for all skill levels.
2
riders
Moderate gravel ride. Good fitness required. Mostly paved surfaces. Suitable for all skill levels.

Sign up for free
1
riders
18.1km
01:24
150m
150m
Moderate gravel ride. Good fitness required. Mostly paved surfaces. Suitable for all skill levels.
4.0
(1)
2
riders
Moderate gravel ride. Good fitness required. Mostly paved surfaces. Suitable for all skill levels.
1
riders
67.1km
04:44
760m
760m
Hard gravel ride. Very good fitness required. Mostly paved surfaces. Suitable for all skill levels.
Our route recommendations are based on thousands of hikes, rides, and runs completed by other people on komoot.
Start today with a free account
Your next adventure awaits.
Login or Signup
Pretty quiet village on the Seine
1
0
A lovely spot for a picnic. There's even a crêpe vendor. You can cross the Seine by ferry. Bicycles are welcome. Check in advance for opening and closing dates.
0
0
Lots of beautiful things to see in this part of Vexin
1
0
Pleasant, cool, shaded, to do during the week, not crowded! On the other hand, avoid on weekends and by bike, pedestrians don't pay attention, dogs are at granny's, children are not kept in check... etc. 28 km of flat.
0
0
There are 6 gravel bike trails documented around Saint-Illiers-Le-Bois on komoot, offering a variety of experiences through woodlands, open countryside, and riverside paths.
While all routes are currently rated moderate to difficult, the region's varied terrain means some sections are less challenging. For a moderate ride, consider the Woodland Path loop from Garennes-sur-Eure, which is 11.2 miles (18.1 km) long and features moderate elevation changes.
The gravel bike trails around Saint-Illiers-Le-Bois feature a diverse mix of terrain, including woodlands, open countryside, and paths alongside waterways. You'll encounter both well-maintained gravel paths and some sections with more natural surfaces, offering a true gravel biking experience.
Yes, for experienced riders seeking a significant challenge, the View of Îlon Harbor – La Roche-Guyon Castle loop from Bonnières is a difficult 63.4 miles (102.0 km) path with extensive riding and notable elevation gains. This route offers panoramic views and historical landmarks.
The region is generally pleasant for gravel biking from spring through autumn, when the weather is mild and the natural landscapes are vibrant. Summer offers longer daylight hours, while spring and autumn provide cooler temperatures and beautiful scenery. Winter riding is possible, but be prepared for potentially muddier conditions, especially in wooded areas.
Many of the gravel routes in the area are designed as loops, allowing you to start and finish at the same point. For example, the popular Le Vieux-Moulin – Le Vieux Moulin (Vernon) loop from Bonnières is a 19.7 miles (31.8 km) circular trail.
Several routes offer scenic views and pass by interesting landmarks. You might encounter historical sites like the Saint-Aubin Church, Pacy-sur-Eure, or enjoy panoramic vistas from the Belvédère de Rolleboise. The Ile aux Dames – Notre-Dame Church, Vétheuil loop from Rosny-sur-Seine also leads through varied and picturesque landscapes.
Many routes start from villages like Bonnières or Rosny-sur-Seine, where public parking is generally available. It's advisable to check local parking options in these starting points before your ride.
While specific cafes directly on the trails are not always guaranteed, many routes connect villages and towns where you can find local establishments for refreshments. Planning your route to pass through larger settlements like Rosny-sur-Seine or Bonnières will increase your chances of finding places to stop.
The area is highly rated by the komoot community, with an average score of 4.2 stars from over 11 reviews. Reviewers often praise the diverse terrain, the mix of woodlands and open countryside, and the well-connected network of paths that make for engaging gravel rides.
For a family-friendly option, consider routes that are shorter and have less elevation gain. The Le Vieux-Moulin – Le Vieux Moulin (Vernon) loop from Bonnières, at 19.7 miles (31.8 km) and moderate difficulty, could be suitable for families with some biking experience, offering a mix of terrain without being overly strenuous.


Browse the best Gravel rides in other regions.