4.5
(435)
12,216
riders
10
rides
No traffic road cycling routes around Theys are situated in the Isère department of southeastern France, within the heart of the Belledonne massif. This region offers diverse terrain, from valley roads along the Isère River in the Grésivaudan Valley to challenging mountain passes like Col du Barioz and Col des Ayes. The landscape is characterized by the majestic Belledonne and Chartreuse massifs, providing varied elevation and scenic backdrops for road cyclists.
Last updated: July 3, 2026
4.5
(17)
462
riders
52.6km
02:03
180m
180m
Moderate road ride. Good fitness required. Mostly well-paved surfaces and easy to ride.
4.0
(2)
143
riders
38.8km
01:30
100m
100m
Moderate road ride. Great for any fitness level. Some segments of this route may be unpaved and difficult to ride.

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4.8
(6)
36
riders
50.4km
02:55
1,190m
1,190m
Hard road ride. Very good fitness required. Mostly well-paved surfaces and easy to ride.
4.2
(11)
148
riders
42.4km
01:42
130m
130m
Easy road ride. Great for any fitness level. Mostly well-paved surfaces and easy to ride.
23
riders
82.8km
05:31
2,650m
2,650m
Hard road ride. Very good fitness required. Mostly well-paved surfaces and easy to ride.
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Popular around Theys
beautiful bike route with little traffic
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new paved sections, a treat
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It is indeed Chartreuse. There is also a "must-see" that presents "a magnificent view" of Chartreuse when it is actually Belledonne!!
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quiet route, away from the main road
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Very pretty, but it's not the Vercors, it's the Chartreuse, Mont St Eynard to be exact.
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Climb to the Col du Barioz via Les Fontaines and Le Charpieux. A technical climb after Les Perrins requires vigilance and some pushing. Please note: Passage after Les Perrins may be blocked during the summer by an electric sheep fence.
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Komoot offers 8 curated no-traffic road cycling routes around Theys. These routes range from easy valley rides to challenging mountain passes, ensuring options for various skill levels.
Theys is highly rated by the komoot community, with an average score of 4.4 out of 5 stars from 341 ratings. Cyclists frequently praise the stunning views of the Belledonne and Chartreuse massifs, the diverse terrain, and the quiet roads that make for a peaceful cycling experience.
Yes, there is one easy route specifically designed for a relaxed experience. The Belle via the new route – The organic farm loop from Lumbin is a great option, covering 32.8 km with moderate elevation gain, perfect for enjoying the scenery without significant traffic concerns.
For experienced cyclists looking for a challenge with reduced traffic, the region offers several options. The Marcieu Pass – Saint-Hilaire-du-Touvet loop from Saint-Hilaire-du-Touvet is a difficult route spanning over 50 km with more than 1100 meters of elevation gain, providing a significant test. Another challenging option is the Col du Barrioz loop from Le Cheylas, which includes a substantial climb to 1041 meters.
The routes around Theys offer breathtaking views of the Belledonne and Chartreuse massifs. You can encounter stunning natural features like Dent de Crolles, various mountain passes such as Col du Coq and Bellefont Pass, and serene lakes including Lake Crop and Lake Grand'Maison. Many routes follow the Isère River, offering picturesque valley scenery.
Yes, many of the routes are designed as loops, allowing you to start and end at the same point. For example, the Lovely road in the valley – belle via the new route loop from Brignoud and the Lovely road in the valley – Basin of Le Cheylas loop from Le Touvet are excellent circular options for enjoying the region's quiet roads.
The best time for road cycling in Theys, particularly for routes involving mountain passes, is typically from late spring (May) through early autumn (October). During these months, the weather is generally mild, and the higher passes are clear of snow, offering optimal conditions and lush green landscapes.
While specific public transport options for bikes directly to every trailhead in Theys can vary, the region is part of the Isère department, which generally supports cycling. It's advisable to check local bus or train services for their bike carriage policies and schedules, especially for routes starting further afield from Theys itself.
Generally, no specific permits are required for road cycling on public roads and designated cycle paths within the Belledonne and Chartreuse massifs. However, always respect local regulations, especially if venturing into protected natural areas or private land. Stick to marked routes to ensure a smooth and legal ride.
Many of the routes start from towns and villages like Brignoud, Le Touvet, or Lumbin, which typically offer public parking facilities. It's recommended to check the starting point of your chosen route on komoot for specific parking recommendations or nearby public parking areas.
While the focus is on no-traffic roads, many routes pass through or near charming villages in the Grésivaudan Valley and on the Balcon de Belledonne. These villages often have small cafes, bakeries, or shops where you can refuel and rest. It's always a good idea to carry sufficient water and snacks, especially on longer or more remote sections.


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