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Gravel rides
France
Ile-de-France
Mantes-La-Jolie

Saint-Illiers-Le-Bois

The best gravel rides around Saint-Illiers-Le-Bois

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.

Best gravel bike trails around Saint-Illiers-Le-Bois

  • The most popular gravel bike trail is Ile aux Dames…

Last updated: May 23, 2026

4.0

(2)

8

riders

#1.

View of Îlon Harbor – La Roche-Guyon Castle loop from Bonnières

104km

06:38

610m

610m

Hard gravel ride. Very good fitness required. Mostly paved surfaces. Suitable for all skill levels.

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Hard

Moderate gravel ride. Good fitness required. Mostly paved surfaces. Suitable for all skill levels.

Moderate
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Moderate gravel ride. Good fitness required. Mostly paved surfaces. Suitable for all skill levels.

Moderate

Moderate gravel ride. Good fitness required. Mostly paved surfaces. Suitable for all skill levels.

Moderate

Hard gravel ride. Very good fitness required. Mostly paved surfaces. Suitable for all skill levels.

Hard

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Tips from the Community

Ulf
May 12, 2026, Château de La Roche-Guyon et Donjon

Pretty quiet village on the Seine

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mcelligottj
April 18, 2026, Woodland Path

A relief after the earlier part of the track

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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.

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Lots of beautiful things to see in this part of Vexin

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Stunning

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nice

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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.

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magnificent view of the Seine

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Frequently Asked Questions

How many gravel bike trails are available around Saint-Illiers-Le-Bois?

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.

Are there any easy or beginner-friendly gravel bike routes in the area?

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.

What kind of terrain can I expect on gravel bike trails near Saint-Illiers-Le-Bois?

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.

Are there any longer, more challenging gravel bike routes for experienced riders?

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.

What are the best seasons for gravel biking around Saint-Illiers-Le-Bois?

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.

Are there any circular gravel bike routes available?

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.

What are some scenic points or attractions I can see along the gravel bike trails?

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.

Where can I find parking for gravel biking in Saint-Illiers-Le-Bois?

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.

Are there any gravel bike trails that pass by cafes or places to stop for refreshments?

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.

What do other gravel bikers enjoy most about gravel biking in Saint-Illiers-Le-Bois?

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.

Are there any routes suitable for a family gravel biking outing?

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.

Most popular routes around Saint-Illiers-Le-Bois

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