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France
Auvergne Rhône Alpes
Grenoble

Réservoir De Grand-Maison

The best cycling routes around Réservoir De Grand-Maison

4.7

(69)

5,942

riders

29

rides

Touring cycling around Réservoir De Grand-Maison offers routes through dramatic alpine landscapes in the Isère department of the French Alps. The area is characterized by the artificial Lac de Grand-Maison, situated at an elevation of 1698 meters, and surrounded by the towering mountain ranges of the Belledonne and Grandes Rousses massifs. The Grand'Maison Dam, a significant hydroelectric facility, is also a prominent feature, providing panoramic views.

Best touring cycling routes around Réservoir De Grand-Maison

  • The most popular touring cycling route is Grand Maison Shelter – View of Lac de Grand-Maison loop from barrage de Grand'Maison, a 7.9 miles (12.7 km) trail that takes about 1 hour to complete. This route offers views of Lac de Grand-Maison and the surrounding alpine environment.
  • Another top favourite among local touring cyclists is Glandon Pass loop from Saint-Jean-d'Arves, a moderate 7.6 miles (12.3 km) path. This route includes sections of the renowned Glandon Pass, known for its challenging climbs and scenic vistas.
  • Local touring cyclists also love the Grand Maison Shelter – Iron Cross loop from barrage de Grand'Maison, a 11.2 miles (18.1 km) trail leading through the area near the Col de la Croix-de-Fer, often completed in about 1 hour 25 minutes.
  • Touring cycling around Réservoir De Grand-Maison is defined by high mountain passes, artificial lakes, and impressive dam structures. The network offers options for various ability levels, from moderate loops to more difficult ascents.
  • The routes in Réservoir De Grand-Maison are highly rated by the komoot community with an average score of 4.7 stars from over 70 reviews. More than 6000 touring cyclists have used komoot to explore Réservoir De Grand-Maison's varied terrain.

Last updated: July 1, 2026

57

riders

#1.

Grand Maison Shelter – Tour des 3 lacs loop from Le Rieu Claret

29.6km

02:22

870m

870m

Hard bike ride. Very good fitness required. Mostly paved surfaces. Suitable for all skill levels.

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Hard

Moderate bike ride. Good fitness required. Mostly paved surfaces. Suitable for all skill levels.

Moderate
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Moderate bike ride. Good fitness required. Mostly paved surfaces. Suitable for all skill levels.

Moderate

Hard bike ride. Very good fitness required. Mostly paved surfaces. Suitable for all skill levels.

Hard

Hard bike ride. Very good fitness required. Mostly paved surfaces. Suitable for all skill levels.

Hard
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Popular around Réservoir De Grand-Maison

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Tips from the Community

PinionRadlerJan
June 18, 2026, Shaded Rest Area with View of the Valley

Small resting place, great view.

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Nice little place with restaurant, church and the Lacets de Montvernier. Further ascent possible.

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2

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Fantastic ascent, great views,

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unvara
September 28, 2025, Vue sur le Mont-Blanc

The descent from the Col du Glandon towards the north offers a striking view towards the valley, the Col de la Madeleine and the Mont Blanc massif.

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The most recent (and last) water retention dam in France.

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Fabien
May 31, 2025, Montvernier

I do them on a mountain bike going down. Not very pleasant. I'll try it on a road bike going up.

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Every curve is a pleasure!

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1

be sure to stop briefly

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1

Frequently Asked Questions

How many touring cycling routes are available around Réservoir De Grand-Maison?

There are over 25 touring cycling routes available around Réservoir De Grand-Maison. These routes traverse dramatic alpine landscapes, offering a variety of experiences for cyclists.

What is the overall difficulty level of touring cycling routes in Réservoir De Grand-Maison?

The routes around Réservoir De Grand-Maison cater to various skill levels. While there is 1 easy route, the majority are moderate (8 routes) or difficult (17 routes), reflecting the challenging alpine terrain and significant elevation changes in the region.

Are there any circular touring cycling routes around Réservoir De Grand-Maison?

Yes, several routes are designed as loops, allowing you to start and finish at the same point. For example, consider the Grand Maison Shelter – View of Lac de Grand-Maison loop from barrage de Grand'Maison, which offers scenic views of the lake, or the more challenging Grand Maison Shelter – Iron Cross loop from barrage de Grand'Maison near the famous Col de la Croix-de-Fer.

What do other touring cyclists say about the routes around Réservoir De Grand-Maison?

The touring cycling routes around Réservoir De Grand-Maison are highly rated by the komoot community, with an average score of 4.7 stars from over 70 reviews. Cyclists often praise the breathtaking alpine scenery, the challenge of the mountain passes, and the impressive views of the reservoir and dam.

Are there touring cycling routes suitable for beginners or families around Réservoir De Grand-Maison?

While the region is known for its challenging alpine terrain, there is 1 easy route available. For families or beginners, it's advisable to look for routes with minimal elevation gain and shorter distances. The area generally features moderate to difficult climbs, so careful route selection is key.

Where can I find more challenging touring cycling routes in the Réservoir De Grand-Maison area?

For advanced touring cyclists seeking a challenge, the Réservoir De Grand-Maison area is ideal, with 17 difficult routes. Many routes incorporate sections of legendary mountain passes like Col du Glandon and Col de la Croix-de-Fer. A demanding option is the Col de la Croix de Fer (Iron Cross Pass) – Refuge of the Étendard loop from Lac Saint-Nicolas, which features significant elevation gain.

What is the best time of year for touring cycling around Réservoir De Grand-Maison?

The best time for touring cycling around Réservoir De Grand-Maison is typically from late spring to early autumn (June to September). During these months, the high mountain passes are usually clear of snow, and the weather is more favorable for cycling, offering stunning views of the alpine landscape.

Are there viewpoints or notable landmarks to see along the touring cycling routes?

Absolutely. The area is rich in impressive sights. The Grand'Maison Dam itself is an engineering marvel, offering panoramic views from its south side. The reservoir, Lac de Grand-Maison, provides spectacular reflections of the surrounding Belledonne and Grandes Rousses massifs. Routes often pass near or over famous mountain passes like Col du Glandon and Col de la Croix-de-Fer, which are renowned for their vistas.

What are the parking options for touring cyclists visiting Réservoir De Grand-Maison?

Parking is generally available at key access points around the reservoir and near the Grand'Maison Dam, which serve as common starting points for many cycling routes. Specific parking availability can vary, so it's advisable to check local signage upon arrival.

Can I reach the Réservoir De Grand-Maison cycling routes using public transport?

Access to the high-altitude Réservoir De Grand-Maison area by public transport can be limited, especially for carrying bicycles. While some regional bus services might operate to nearby towns in the Isère department, direct connections to the reservoir itself are infrequent. It's often more practical to travel by car to a suitable starting point.

Are there places to eat or drink near the touring cycling routes?

Given the alpine and somewhat remote nature of the Réservoir De Grand-Maison area, dedicated cafes or restaurants directly on the routes might be sparse. However, you may find options in nearby villages or at mountain refuges, particularly during peak season. It's always recommended to carry sufficient water and snacks, especially on longer rides.

Is it possible to cycle around Réservoir De Grand-Maison during winter?

Cycling around Réservoir De Grand-Maison during winter is generally not recommended for touring cyclists due to heavy snowfall, icy conditions, and the closure of high mountain passes. The area is at an elevation of 1698 meters, making winter conditions severe and unsuitable for most cycling activities. The best time to visit is typically from late spring to early autumn.

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