4.5
(25)
141
riders
36
rides
Gravel biking around Issou offers a diverse landscape characterized by varied terrain and significant elevation changes, suitable for different skill levels. The region features challenging climbs and rugged paths, making it an ideal destination for gravel cyclists. Gravel bikes are well-suited for navigating the mix of paved surfaces and dirt trails found in the area, providing versatility for exploration.
Last updated: July 3, 2026
4.5
(4)
17
riders
Hard gravel ride. Very good fitness required. Mostly paved surfaces. Suitable for all skill levels.
7
riders
32.7km
02:12
230m
230m
Moderate gravel ride. Good fitness required. Mostly paved surfaces. Suitable for all skill levels.

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5.0
(1)
3
riders
17.4km
01:26
250m
250m
Moderate gravel ride. Good fitness required. Mostly paved surfaces. Suitable for all skill levels.
12
riders
67.1km
03:54
500m
500m
Hard gravel ride. Very good fitness required. You may need to push your bike for some segments of this route.
5.0
(1)
9
riders
Easy gravel ride. Great for any fitness level. Mostly paved surfaces. Suitable for all skill levels.
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a short break for a drink with a beautiful view
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Please note: if you want to park there to go hiking, the car park is currently only open from 2:00 p.m. on Sundays.
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Lots of beautiful things to see in this part of Vexin
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On the Seine à Vélo route in Les Mureaux, a quick stop for a drink or coffee. Open: Wednesday to Sunday from 12:15 p.m. to 2:00 p.m. and Friday and Saturday from 7:15 p.m. to 9:30 p.m.
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Issou offers a selection of over 30 gravel bike trails, catering to various skill levels. You'll find a mix of easy, moderate, and difficult routes to explore the region's diverse landscape.
The gravel bike trails around Issou feature a varied terrain, including mostly paved surfaces and rugged paths. You can expect challenging climbs and significant elevation changes, making it ideal for gravel bikes that handle both roads and dirt trails seamlessly.
Yes, Issou has several routes suitable for beginners. There are 5 easy routes available. A good option to start with is the View of Îlon Harbor – View of the route des crêtes loop from Follainville-Dennemont, which is a moderate 26.4-mile (42.5 km) trail offering scenic views.
For experienced gravel bikers seeking a challenge, Issou offers 10 difficult routes. Consider the Villette Castle – Viewpoint overlooking the Oise loop from Meulan - Hardricourt, a demanding 52.6-mile (84.7 km) path with substantial elevation gain, or the Chaussée Jules César – Axe Majeur footbridge loop from Meulan - Hardricourt, which covers nearly 100 km with significant climbing.
The gravel biking routes in Issou are highly rated by the komoot community, with an average score of 4.6 out of 5 stars from over 25 reviews. Riders often praise the varied terrain, the challenging climbs, and the opportunity to discover historical landmarks along the way.
Yes, several routes pass by notable landmarks. For instance, the Villette Castle – Viewpoint overlooking the Oise loop from Meulan - Hardricourt route goes by Villette Castle. You can also explore nearby attractions like Notre-Dame Church, Vétheuil, or Château de Jambville, which are close to the area.
Many of the gravel bike routes around Issou are designed as loops, offering convenient starting and ending points. Examples include the popular View of Îlon Harbor – View of the route des crêtes loop from Follainville-Dennemont and the Palace of Versailles – Route Royale, Marly Forest loop from Nézel - Aulnay.
While specific seasonal data isn't available, the varied terrain and potential for rugged paths suggest that spring and autumn would offer the most pleasant conditions, with milder temperatures and potentially less extreme weather. Summer can be enjoyable, but be prepared for warmer temperatures, and winter might bring colder, potentially wetter conditions on some trails.
While specific parking locations for each trail are not detailed, many routes start from towns or villages like Follainville-Dennemont, Meulan - Hardricourt, or Nézel - Aulnay, where public parking is generally available. It's advisable to check the starting point of your chosen route for specific parking information.
Some routes, such as the Ile aux Dames – View of Îlon Harbor loop from Mantes Station, start directly from Mantes Station, making them accessible via public transport. For other routes, you may need to combine public transport with a short ride to the trailhead.
Yes, several routes provide excellent viewpoints. The Villette Castle – Viewpoint overlooking the Oise loop from Meulan - Hardricourt offers expansive views overlooking the Oise River, and the View of Îlon Harbor – View of the route des crêtes loop from Follainville-Dennemont provides scenic views of Îlon Harbor and follows a route des crêtes.
The gravel bike trails in Issou vary significantly in length and duration. You can find routes ranging from around 28 km, like the Ile aux Dames – View of Îlon Harbor loop from Mantes Station which takes about 2 hours 12 minutes, to longer, more challenging rides like the Chaussée Jules César – Axe Majeur footbridge loop from Meulan - Hardricourt, which is nearly 100 km and can take over 8 hours.


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