4.3
(7)
29
riders
8
rides
Gravel biking around Oyeu offers a diverse landscape characterized by rolling hills, forested sections, and routes that often feature views of Lac de Paladru. The region's terrain includes both challenging climbs over cols and côtes, and more moderate paths. Elevation changes are common, providing varied experiences for gravel cyclists.
Last updated: August 25, 2026
5.0
(2)
7
riders
34.1km
02:26
570m
570m
Hard gravel ride. Very good fitness required. Mostly paved surfaces. Suitable for all skill levels.
3
riders
48.6km
03:33
920m
920m
Hard gravel ride. Very good fitness required. Mostly paved surfaces. Suitable for all skill levels.

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4.5
(2)
6
riders
29.8km
02:21
730m
730m
Hard gravel ride. Very good fitness required. Mostly paved surfaces. Suitable for all skill levels.
3
riders
53.5km
04:09
1,260m
1,260m
Hard gravel ride. Very good fitness required. Mostly paved surfaces. Suitable for all skill levels.
5
riders
29.6km
02:13
770m
770m
Hard gravel ride. Very good fitness required. Mostly paved surfaces. Suitable for all skill levels.
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Medieval origins (11th - 12th centuries): The religious site is of very ancient origin. From the end of the 11th century, several religious buildings are mentioned in the commune. The Saint-Pierre church itself is cited under the name "ecclesia de Anos" in the famous cartulary of Saint Hugues (Bishop of Grenoble). In the Middle Ages, the church was directly dependent on the priory of Saint-Laurent of Grenoble, as attested by an official terrier dating from 1497 under the name "ecclesia Sancti Petri de Fortaressia".
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Considered by local cyclists to be the most demanding pass in the Chambarans, it mainly connects the Isère valley to the commune of La Forteresse.
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Considered by local cyclists to be the most demanding pass in the Chambarans, it mainly connects the Isère valley to the municipality of La Forteresse.
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In the heart of the cold lands of Isère, 3 private ponds, in the middle of nature, await you: la Rajaz, le Vivier, and la Blanche.
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Located at the northern end of Lake Paladru, this wetland is fed by the Courbon stream. It is a true extension of the lake, rich in biodiversity and very pleasant.
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Here, you enter a sensitive natural area for a 1-kilometer trail marked with four stations to discover the area's remarkable flora and fauna. A pleasant way to connect the two shores of Lake Paladru, between Paladru and Montferrat.
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A tourist attraction in this area is Lake Paladru, which stretches from the village of the same name in the north to Charavines in the south. If you walk around the lake from a distance rather than on the paths directly along the shore, the hills offer some very beautiful views of the landscape. But not only that: on the outskirts of Bilieu – on the eastern shore of the lake – we pass a small sacred monument: a simple wayside cross made of two massive wooden beams (without a body or INRI inscription), which already shows the wear and tear of wind and weather.
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There are over 10 gravel biking routes in the Oyeu region, offering a variety of experiences for different skill levels.
Yes, while many routes are moderate to difficult, there is at least one easy gravel bike trail. For a less strenuous ride, consider routes that stick closer to the lake shore, such as the Lac de Paladru – Lake Paladru loop from Chirens, which is rated moderate and offers beautiful lake views.
For experienced gravel bikers seeking a challenge, routes like the Côte du Rousset – Longechenal Church loop from Le Grand-Lemps offer significant elevation gain and longer distances. This particular route features nearly 1000 meters of climbing.
The Oyeu region is generally pleasant for gravel biking from spring through autumn. Spring brings blooming landscapes, while autumn offers vibrant colors. Summers are also suitable, but it's advisable to start early to avoid the midday heat. Winters can be ridden, but be prepared for potentially colder, wetter conditions and check local forecasts for ice or snow.
Absolutely. Many routes offer stunning views, especially of Lake Paladru. You can also find notable landmarks like the Our Lady of the Vines chapel or the Croix des Cochettes View of Lac de Paladru, which provides a panoramic vista of the lake.
Yes, most of the gravel bike routes in the Oyeu area are designed as loops, allowing you to start and finish at the same point. For example, the Lac de Paladru – Our Lady of the Vines loop from Montferrat is a popular circular option.
Many routes start from villages or towns around Oyeu, such as Montferrat, L'Arsenal, Chirens, or Le Grand-Lemps. These locations typically offer public parking facilities. It's recommended to check the specific starting point of your chosen route for the most convenient parking options.
The Oyeu region is highly rated by the komoot community, with an average score of 4.25 stars. Reviewers often praise the diverse landscape, which includes rolling hills, forested sections, and the beautiful views of Lac de Paladru. The variety of terrain, from challenging climbs to more moderate paths, is also frequently highlighted.
Many routes in the Oyeu region feature the stunning Lac de Paladru. For a ride that closely follows the lake, consider the Lac de Paladru – Lake Paladru loop from Chirens, which offers continuous lakeside scenery.
Yes, the Oyeu region is known for its hilly terrain, featuring several cols and côtes. The Col des Mille Martyrs – Pierre Chave Bridge loop from L'Arsenal is an excellent choice if you're looking for a route with substantial elevation gain through a scenic pass.
For those looking for a longer ride, the Thousand Martyrs Pass – Col des Mille Martyrs loop from Chirens covers over 50 kilometers (32 miles) and includes significant climbing, making it a substantial outing for a gravel bike.


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