4.8
(11)
61
riders
25
rides
Gravel biking around Theys, situated at 650 meters altitude in the Balcon de Belledonne, offers diverse terrain for cyclists. The region features a mix of mountainous landscapes, vast pastoral areas, and extensive forest tracks. Riders can expect varied surfaces, including both paved roads and unpaved trails, characteristic of the Isère department's gravel routes. This blend provides conditions suitable for transitioning between different types of ground, with challenging mountain passes and panoramic views of the Belledonne summits.
Last updated: July 3, 2026
4.7
(3)
28
riders
50.8km
02:34
130m
120m
Moderate gravel ride. Good fitness required. Mostly paved surfaces. Suitable for all skill levels.
4.5
(4)
13
riders
19.2km
01:39
490m
490m
Hard gravel ride. Very good fitness required. Mostly paved surfaces. Suitable for all skill levels.

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4.3
(3)
28
riders
38.6km
01:51
100m
100m
Easy gravel ride. Great for any fitness level. Mostly paved surfaces. Suitable for all skill levels.
7
riders
28.8km
01:57
560m
570m
Hard gravel ride. Very good fitness required. Mostly paved surfaces. Suitable for all skill levels.
4.7
(3)
12
riders
34.7km
01:45
120m
120m
Easy gravel ride. Great for any fitness level. Mostly paved surfaces. Suitable for all skill levels.
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Very beautiful hamlet, which notably opens up the view of the Bauges in the background. The road that allows access from Allevard is very accessible.
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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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Very pretty, but it's not the Vercors, it's the Chartreuse, Mont St Eynard to be exact.
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Gravel section with 40mm tires. (Caracal Hutchinson) In a very dry period (end of June), nothing to complain about in the St Hilaire/Col de Marcieu direction.
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Theys offers a wide selection of gravel biking routes, with over 30 trails recorded on komoot. These routes cater to various skill levels, including 4 easy, 7 moderate, and 22 difficult options, ensuring there's a suitable adventure for every rider.
Gravel biking around Theys, located in the Balcon de Belledonne, features a diverse mix of landscapes. You'll encounter mountainous terrain with significant elevation changes, vast pastoral areas, and extensive forest tracks. The routes combine both paved roads and unpaved trails, characteristic of the Isère department's gravel offerings, providing an ideal blend for gravel cyclists.
While many routes in Theys are challenging, there are some easier options suitable for families or those new to gravel biking. For a more gentle experience, consider routes with less elevation gain, such as the Flat gravel path – Gravel Isere loop from Goncelin, which is rated moderate and has minimal climbing.
Yes, many gravel routes in the Theys area are designed as loops, allowing you to start and finish at the same point. Examples include the challenging Marcieu Pass – Saint-Hilaire-du-Touvet loop from Saint-Hilaire-du-Touvet or the longer Saint-Hilaire-du-Touvet – Saint-Pancrasse loop from Lumbin.
Theys offers excellent gravel biking opportunities throughout much of the year. Spring and autumn provide pleasant temperatures and vibrant scenery. Summer is also popular, though some higher elevation routes might be warm. Winter cycling is possible, but be prepared for colder conditions and potential snow or ice on higher passes, especially in the Belledonne massif.
Absolutely. Theys is situated on the 'Balcon de Belledonne,' offering stunning panoramic views of the Belledonne summits and surrounding valleys. Many routes provide vistas of prominent massifs like Chartreuse, Mont du Chat, and even Mont Blanc on clear days. Look for routes that ascend to higher elevations for the most rewarding views.
Beyond the stunning mountain views, the region boasts diverse natural features. You can encounter protected flora, including various species of orchids, in the dry grasslands around Theys. The wider Isère department also features forest tracks, rivers, and lakes. For specific water features, consider exploring highlights like Lake Crop or the impressive The Alloix Waterfalls.
Yes, the area around Theys is home to several beautiful waterfalls. While cycling, you might find opportunities to visit highlights such as Gouille Waterfall, Pissou Waterfall, or Charbonnière Waterfall. These make for excellent scenic detours or rest stops.
The gravel biking routes around Theys are highly regarded by the komoot community, with an impressive average rating of 4.8 stars from over 17 reviews. Riders often praise the varied terrain, the challenging climbs, and the rewarding panoramic views of the Belledonne massif and surrounding valleys.
The region around Theys has a rich history. While gravel biking, you might encounter elements of the area's past, such as old fortified villages, ancient dwellings, and strong houses. These historical features add a cultural dimension to your outdoor adventure.
Yes, Theys offers 7 moderate gravel routes. A good option for intermediate riders looking for a balanced challenge is the Flat gravel path – Gravel Isere loop from Goncelin, which covers 40.8 km with a manageable elevation gain, providing a good mix of distance and terrain without extreme difficulty.
For experienced gravel bikers seeking a challenge, Theys has 22 difficult routes. A notable option is the View of the Combe de Savoie – Chartreuse loop from La Terrasse, which spans over 50 km and features significant elevation changes, offering a demanding yet rewarding experience through mountainous landscapes.


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