4.6
(190)
4,235
riders
16
rides
Road cycling around Le Grand-Lemps offers diverse landscapes within the Isère department of the Auvergne-Rhône-Alpes region. The area features the undulating "Terres Froides" region, characterized by alternating meadows, cultivated fields, and forests. Cyclists will find a blend of hilly terrain and serene natural reserves, including the Grand-Lemps Pond, which formed in a glacial depression. This topography provides varied routes for road cyclists, from gentle paths to challenging ascents.
Last updated: July 10, 2026
36
riders
86.2km
04:29
1,490m
1,490m
Hard road ride. Very good fitness required. Mostly well-paved surfaces and easy to ride.
15
riders
92.0km
04:39
970m
970m
Hard road ride. Very good fitness required. Mostly well-paved surfaces and easy to ride.

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9
riders
71.4km
03:39
960m
960m
Hard road ride. Very good fitness required. Mostly well-paved surfaces and easy to ride.
5.0
(1)
8
riders
102km
04:50
990m
990m
Hard road ride. Very good fitness required. Mostly well-paved surfaces and easy to ride.
5.0
(1)
4
riders
26.4km
01:15
130m
130m
Easy road ride. Great for any fitness level. Mostly well-paved surfaces and easy to ride.
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Traces of this castle can be found in the archives dating back to 1315, when it was under the jurisdiction of the lord of Saint Geoirs. A remarkably well-preserved tower still remains.
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Here is the route for the ascent of the Col de la Croix de Toutes Aures starting from Charubin, the variant passing via the Route de Saint-Marcellin
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In 1869, the Marist Brothers purchased the castle and its grounds. They raised the body of the central building by one floor. The castle was then acquired by the city in 1906. In 1914, it became a military hospital and from 1940 to 1960, a modern college. The castle now houses a music school and meeting rooms. Many areas are vacant. The Ministry and the public agency for cultural cooperation (aida) conducted a feasibility study for the establishment of a European Cultural Exchange Center in the building. If you take a walk in the park in the afternoon, you can hear the musicians practicing.
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Quite a steep climb, a climb that is part of the official route of the 2025 French Championship!
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Just before the Col de Lachard, superb view of the village of Quincieu!
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Official referenced pass that can be extended to the Col de la Croix de Toutes Aures.
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a very regular pass and super pleasant to climb with beautiful clear viewpoints. magnificent view of Mont Blanc and the snow-capped mountains on a clear day!
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Le Grand-Lemps offers a diverse network of over 15 road cycling routes. These routes cater to various skill levels, including 1 easy route, 12 moderate routes, and 4 difficult routes, ensuring options for every cyclist.
The region around Le Grand-Lemps, known as the "Terres Froides," features a blend of hilly landscapes, alternating meadows, cultivated fields, and forests. You'll encounter varied terrain, from gentle paths to challenging ascents, often passing by serene natural reserves like the Grand-Lemps Pond.
Yes, there are options for beginners. While most routes are moderate to difficult, the region does offer at least one easy road cycling route. These typically traverse the less hilly sections of the "Terres Froides," providing a gentle introduction to the area's scenic beauty.
For cyclists seeking a challenge, Le Grand-Lemps provides several difficult routes with substantial elevation gains. A notable option is the Toutes Aures Pass – Lachard Pass (695 m) loop from Le Grand-Lemps, which features significant ascents through mountain passes. The Côte du Rousset – Étang du Vivier loop from Le Grand-Lemps also offers demanding climbs.
Many routes offer scenic views and pass by notable attractions. You can cycle around Lake Paladru, known for its beautiful waters, or explore the unique ecosystem of the Grand-Lemps Pond natural reserve. Historical sites like the 17th-century seigniorial castle and the belfry in Le Grand-Lemps itself can also be points of interest.
Yes, many of the road cycling routes in the area are circular, allowing you to start and end at the same point. Examples include the popular Lake Paladru – Lac de Paladru loop from Le Grand-Lemps and the Grand-Lemps Pond – Longechenal Church loop from Le Grand-Lemps, both offering diverse scenery.
The road cycling routes in Le Grand-Lemps are highly rated by the komoot community, with an average score of 4.7 stars from over 40 reviews. Cyclists often praise the varied terrain, the serene natural reserves, and the opportunity to explore both challenging climbs and picturesque flat sections, particularly around Lake Paladru and the Grand-Lemps Pond.
Absolutely. Lake Paladru is a popular destination for cyclists in the region. The Lake Paladru – Lac de Paladru loop from Le Grand-Lemps is a moderate 52.5 km route that offers scenic views around the lake, making it a favorite among local road cyclists.
Beyond natural beauty, Le Grand-Lemps and its surroundings offer historical sites. You might pass by the 17th-century seigniorial castle or the preserved belfry of a 14th-century chapel in Le Grand-Lemps. Other points of interest include Notre-Dame-du-Mont Chapel and Château de Montgontier, which can add a cultural dimension to your ride.
The region is generally pleasant for road cycling from spring through autumn. Summer offers warm weather perfect for exploring, especially around lakes. However, the varied terrain and natural reserves provide beautiful scenery throughout the milder months, making it enjoyable for most of the year.
Yes, for those looking for longer rides, Le Grand-Lemps offers several routes exceeding 80 km. For example, the Toutes Aures Pass – Lachard Pass (695 m) loop from Le Grand-Lemps covers 86.2 km, and the Grand-Lemps Pond – Longechenal Church loop from Le Grand-Lemps is 92 km, providing ample distance for endurance cyclists.
The "Terres Froides" region around Le Grand-Lemps is characterized by a mix of open fields and forests. Many routes will lead you through wooded surroundings, particularly towards the southeast near Voiron, offering shaded sections and a different kind of scenic beauty.


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