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France
Auvergne Rhône Alpes
Grenoble

Theys

The best MTB trails around Theys

4.5

(345)

2,192

riders

175

rides

Mountain biking around Theys, located in the Isère department of southeastern France, features diverse landscapes within the Belledonne mountain range. The region's terrain ranges from an altitude of 320m to 2124m, encompassing significant peaks, mountain passes, and extensive pastoral areas. Trails often traverse the foothills of the Belledonne, offering varied riding conditions and views over the Grésivaudan valley. This area provides a network of mountain bike routes suitable for different skill levels, characterized by natural features like Crêt du Poulet…

Last updated: July 1, 2026

4.3

(38)

142

riders

#1.

Boucle de Grand Rocher et Crêt du poulet

24.4km

02:43

800m

790m

Moderate mountain bike ride. Good fitness required. Suitable for all skill levels.

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Moderate

Hard mountain bike ride. Very good fitness required. Advanced riding skills necessary. Some portions of the route may require you to push your bike.

Hard
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Moderate mountain bike ride. Good fitness required. Suitable for all skill levels.

Moderate

Hard mountain bike ride. Very good fitness required. Advanced riding skills necessary.

Hard

4.8

(4)

29

riders

Hard mountain bike ride. Very good fitness required. Advanced riding skills necessary.

Hard
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Tips from the Community

Ced
November 1, 2025, Crêt du Poulet

A panoramic view of the valley with a viewpoint indicator

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Small resort, but big assets

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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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Nice place that can be accessed by easy trails from the Crêt du Poulet refuge

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Col du Barrioz is a climb in the Grenoble region. It has a length of 13.6 kilometers and a climb of 818 vertical meters with a slope of 6% on average, which implies a difficulty level of 614. The top of the climb is located at 1052 m. From this Col you can go up to the Crêt du Poulet refuge

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Magnificent viewpoints. Diverse landscapes

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William Cook
November 22, 2023, Crêt du Poulet

Despite its name Crête du Poulet, you probably have a better chance of coming across cows here. The highest point is marked with a large cross, which is probably helpful if you're riding in less than ideal conditions. The trails here are multi-use hiking trails, so be nice to hikers as you descend the slope.

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William Cook
November 22, 2023, Col du Barrioz

The Col du Barrioz is located in the Belledonne region, near the city of Grenoble. From here you can find a satisfying climb up to here, as well as high-quality routes of different styles, road and mountain bike enthusiasts can coexist peacefully after all.

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Frequently Asked Questions

What kind of terrain can I expect on mountain bike trails around Theys?

The mountain bike trails around Theys traverse diverse landscapes within the Belledonne mountain range, with altitudes ranging from 320m to 2124m. You'll encounter varied terrain through foothills, significant peaks like Crêt du Poulet, and mountain passes such as the Col du Barrioz, often offering panoramic views over the Grésivaudan valley.

Are there mountain bike trails suitable for beginners in Theys?

Yes, Theys offers mountain bike routes for various skill levels. While many trails are moderate to difficult, there are at least 12 easy routes available, providing options for those new to mountain biking or looking for a more relaxed ride.

Can I find challenging mountain bike routes in Theys?

Absolutely. Theys is known for its challenging mountain biking. There are over 120 difficult routes available, including the demanding Crêt du Poulet Refuge – The Grand Rock loop from Theys, which spans 32.4 km with a 1,290m elevation gain, offering significant climbs and rewarding views.

Are there any circular mountain bike routes around Theys?

Many of the mountain bike routes in Theys are designed as loops. For example, the popular Boucle de Grand Rocher et Crêt du poulet is a 24.4 km moderate circular trail, and the Crêt du Poulet Refuge – Col du Barrioz loop from Theys is another excellent option.

What natural features or viewpoints can I see while mountain biking in Theys?

The region is rich in natural beauty. You can expect breathtaking panoramic views over the Grésivaudan valley, especially from peaks like Crêt du Poulet and Grand Rocher. Mountain passes such as Col du Barioz and Bellefont Pass also offer stunning vistas, including views of Mont Blanc from Bellefont Pass. The Cascade des Avoux is a notable waterfall in the area.

Are there any waterfalls accessible or visible from mountain bike trails in Theys?

Yes, the region features several waterfalls. The Cascade des Avoux is a notable waterfall in the area. You can experience it on routes like the Super descent to Prapoutel – Cascade des Avoux loop from Theys. Other waterfalls in the vicinity include the Gouille Waterfall and The Alloix Waterfalls.

What do other mountain bikers say about the trails in Theys?

The mountain bike routes in Theys are highly rated by the komoot community, with an average score of 4.3 stars from over 300 reviews. Over 2000 mountain bikers have explored the varied terrain, often praising the diverse landscapes and challenging climbs.

What is the best time of year for mountain biking in Theys?

Theys is suitable for outdoor activities throughout the year. While winter offers snow sports, the spring, summer, and autumn months are ideal for mountain biking, allowing you to fully enjoy the diverse trails and natural features without snow cover. Always check local conditions before heading out.

Are there any places to eat or drink near the mountain bike trails in Theys?

The region around Theys has local producers and amenities. While specific cafes directly on trails are not detailed, you can find options in the nearby villages. For instance, the La Combe Madame Refuge is listed as a pub in the area, offering a place to stop.

Are there any family-friendly mountain bike options in Theys?

While many routes are moderate to difficult, the presence of easy trails suggests there are options suitable for families or those with less experience. Look for routes specifically marked as 'easy' to ensure a comfortable experience for all family members.

Can I bring my dog on the mountain bike trails in Theys?

Theys is a popular outdoor destination, and many trails in the Belledonne region are multi-use, encouraging respectful sharing with hikers. While specific dog-friendly regulations for each mountain bike trail are not detailed, it's generally advisable to keep dogs on a leash and ensure they are well-behaved, especially on shared paths.

How many mountain bike trails are there in Theys?

There are over 160 mountain bike trails around Theys, offering a wide range of options for different skill levels and preferences. This includes 12 easy, 31 moderate, and 124 difficult routes.

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