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Road cycling routes
France
Ile-de-France
Mantes-La-Jolie

Saint-Illiers-Le-Bois

The best road cycling routes around Saint-Illiers-Le-Bois

4.4

(45)

822

riders

140

rides

Road cycling routes around Saint-Illiers-Le-Bois traverse the tranquil French countryside, characterized by diverse landscapes and well-maintained paved surfaces. The region offers a network of routes through serene greenery, including areas like Rosny Forest, and features varied elevation suitable for different skill levels. This area, part of the Yvelines department, provides a peaceful escape for road cyclists.

Best road cycling routes around Saint-Illiers-Le-Bois

  • The most popular road cycling route is La Roche-Guyon Castle – Ile aux Dames loop from Bréval,…

Last updated: May 18, 2026

3.8

(24)

160

riders

#1.

La Roche-Guyon Castle – Ile aux Dames loop from Bréval

85.6km

03:37

500m

500m

Moderate road ride. Good fitness required. Mostly well-paved surfaces and easy to ride.

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Moderate

Moderate road ride. Good fitness required. Mostly well-paved surfaces and easy to ride.

Moderate
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Hard road ride. Very good fitness required. Mostly well-paved surfaces and easy to ride.

Hard

Hard road ride. Very good fitness required. Some segments of this route may be unpaved and difficult to ride.

Hard

4.0

(2)

6

riders

Easy road ride. Great for any fitness level. Mostly well-paved surfaces and easy to ride.

Easy
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Tips from the Community

Enzo
April 20, 2026, Château des Tourelles

Maybe the oldest medieval small castle still in an almost original state

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mohammed
August 30, 2025, Route Royale

practicable

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Beautiful castle with a beautiful forest nearby 😉

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Beautiful castle on the banks of the Seine

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very nice walk, little elevation but traffic on weekends

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right next to a small Norman house

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Frequently Asked Questions

How many road cycling routes are available around Saint-Illiers-Le-Bois?

There are over 140 road cycling routes available around Saint-Illiers-Le-Bois. These routes cater to various skill levels, with 35 easy, 94 moderate, and 11 difficult options.

What is the best time of year for road cycling in Saint-Illiers-Le-Bois?

The region offers pleasant cycling conditions throughout much of the year, with its tranquil countryside and green landscapes. Spring and autumn generally provide ideal temperatures and beautiful scenery, though summer can also be enjoyable, especially in the shaded forest areas.

What kind of landscapes and terrain can I expect while road cycling around Saint-Illiers-Le-Bois?

You can expect diverse landscapes ranging from serene countryside and green groves to extensive forests like Rosny Forest. The terrain includes mostly paved surfaces, ideal for road cycling, with varied elevation profiles from moderate loops to more challenging rides with significant elevation gains, such as those found on the Behoust Castle – Château de Tilly loop from Bréval.

Are there road cycling routes suitable for families or beginners?

Yes, the region offers several routes suitable for all fitness levels, including 35 easy routes. These typically feature less elevation and shorter distances, allowing for a relaxed experience through the tranquil French countryside.

Can I find circular road cycling routes in the area?

Many of the road cycling routes around Saint-Illiers-Le-Bois are designed as loops, allowing you to start and end at the same point. Examples include the popular La Roche-Guyon Castle – Ile aux Dames loop from Bréval and the Avre Aqueduct – Anet Castle loop from Bréval.

What historical landmarks or natural features can I explore along the road cycling routes?

The routes often pass by charming historical sites and natural features. You can encounter quaint churches like Neauphlette Church, impressive châteaux such as Château de Tilly, and scenic viewpoints like the Belvédère de Rolleboise, offering expansive views of the Seine.

Is public transport available to access road cycling routes, especially with a bike?

While Saint-Illiers-Le-Bois itself is a tranquil village, the wider Yvelines department is well-connected. For specific public transport options that accommodate bikes, it's advisable to check local train and bus services from nearby towns like Bréval, which often serve as starting points for many routes.

Where can I find parking near the road cycling routes in Saint-Illiers-Le-Bois?

Parking is generally available in and around the village of Saint-Illiers-Le-Bois, as well as in nearby towns like Bréval, which serve as common starting points for many cycling tours. Look for designated parking areas in village centers or near local amenities.

Are there cafes or accommodation options for cyclists in the area?

The region offers various charming towns and villages where you can find cafes, restaurants, and accommodation. While Saint-Illiers-Le-Bois is small, nearby areas provide options ranging from gites to hotels, catering to visitors looking for a place to rest and refuel.

What do other road cyclists enjoy most about the routes in Saint-Illiers-Le-Bois?

The road cycling routes in Saint-Illiers-Le-Bois are highly rated by the komoot community, with an average score of 4.3 stars from over 50 reviews. Cyclists frequently praise the serene countryside, the well-maintained paved surfaces, and the variety of routes that cater to different skill levels, often highlighting the peaceful escape into the French countryside.

Are there any long-distance cycling networks that pass through or near Saint-Illiers-Le-Bois?

Yes, Saint-Illiers-Le-Bois benefits from its proximity to broader cycling networks. The 'Vallée du Loir by bike' (V47) passes through nearby Illiers-Combray, and this route also intersects with the Saint-Jacques à Vélo route and is a stop on the Véloscénie (Paris-Mont-Saint-Michel cycle route). Longer national routes like the 474 km 'La Véloscénie from Paris to Mont Saint-Michel' and the 520 km 'The Avenue Verte London-Paris' also traverse the Yvelines department, offering extensive cycling adventures. More information can be found on France Vélo Tourisme.

Can I find challenging road cycling routes with significant elevation gains?

Absolutely. For experienced cyclists seeking a challenge, routes like the Palace of Versailles – Grand Canal loop from Bréval offer significant elevation gains, with over 1200 meters of ascent over its 163 km distance. The region provides options that require very good fitness, ensuring a demanding ride.

Most popular routes around Saint-Illiers-Le-Bois

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