Réservoir De Grand-Maison is a region situated in the French Alps, within the Isère department, nestled between the Belledonne and Grandes Rousses massifs. This area is characterized by its mountainous terrain and significant natural features, including the high-altitude Lac de Grand Maison and the lower Lac du Verney. The diverse topography and alpine setting provide a varied landscape for several sports like road cycling, touring cycling, hiking, jogging, and more.
The Réservoir De…
123
Routes
4.6
(386)
Average rating
15911
People visited

4.7
(21)
2,589
riders
79.7km
05:08
2,340m
2,340m
Hard road ride. Very good fitness required. Mostly well-paved surfaces and easy to ride.

4.7
(64)
4,849
riders
54.2km
03:19
1,430m
1,430m
Hard road ride. Very good fitness required. Mostly well-paved surfaces and easy to ride.

4.7
(3)
335
riders
42.4km
03:03
1,570m
1,570m
Hard road ride. Very good fitness required. Mostly well-paved surfaces and easy to ride.

166
riders
59.3km
03:57
1,890m
1,890m
Hard road ride. Very good fitness required. You may need to push your bike for some segments of this route.
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4.9
(21)
2,372
riders
63.6km
05:24
2,140m
2,140m
Hard bike ride. Very good fitness required. Mostly paved surfaces. Suitable for all skill levels.

5.0
(7)
945
riders
105km
08:30
3,160m
3,160m
Hard bike ride. Very good fitness required. Mostly paved surfaces. Suitable for all skill levels.

5.0
(1)
293
riders
59.0km
04:52
1,890m
1,890m
Hard bike ride. Very good fitness required. Mostly paved surfaces. Suitable for all skill levels.

5.0
(1)
86
riders
20.2km
01:56
890m
890m
Hard bike ride. Very good fitness required. Mostly paved surfaces. Suitable for all skill levels.
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4.6
(7)
61
hikers
13.5km
05:59
1,150m
1,150m
Hard hike. Very good fitness required. Mostly accessible paths. Sure-footedness required.

4.6
(24)
286
hikers
8.03km
03:42
470m
470m
Hard hike. Good fitness required. Sure-footedness, sturdy shoes and alpine experience required.

4.7
(24)
195
hikers
4.78km
01:36
190m
190m
Moderate hike. Great for any fitness level. Mostly accessible paths. Sure-footedness required.

4.8
(29)
239
hikers
5.54km
02:24
350m
360m
Moderate hike. Good fitness required. Mostly accessible paths. Sure-footedness required.
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5.0
(5)
43
riders
18.5km
02:02
670m
670m
Moderate mountain bike ride. Good fitness required. Suitable for all skill levels.

5.0
(1)
32
riders
43.6km
06:00
2,340m
2,350m
Hard mountain bike ride. Very good fitness required. Advanced riding skills necessary. Some portions of the route may require you to push your bike.

4.0
(2)
29
riders
21.5km
02:48
1,110m
1,110m
Hard mountain bike ride. Very good fitness required. Advanced riding skills necessary.

5.0
(1)
35
riders
19.5km
02:21
990m
1,000m
Hard mountain bike ride. Very good fitness required. Advanced riding skills necessary.
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26
runners
11.6km
01:38
580m
580m
Hard run. Very good fitness required. Sure-footedness, sturdy shoes and alpine experience required.

21
runners
9.02km
01:25
530m
530m
Hard run. Very good fitness required. Mostly paved surfaces. Suitable for all skill levels.

26
runners
5.59km
00:47
180m
180m
Hard run. Good fitness required. Sure-footedness, sturdy shoes and alpine experience required.

21
runners
11.6km
01:48
580m
580m
Hard run. Very good fitness required. Mostly paved surfaces. Suitable for all skill levels.
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17
hikers
11.0km
06:48
1,220m
1,220m
Hard mountaineering route. Very good fitness required. Sure-footedness, sturdy shoes and alpine experience required.

14
hikers
19.5km
11:27
1,790m
1,790m
Hard mountaineering route. Very good fitness required. Sure-footedness, sturdy shoes and alpine experience required.

4.5
(2)
13
hikers
12.0km
06:18
1,070m
1,070m
Hard mountaineering route. Very good fitness required. Sure-footedness, sturdy shoes and alpine experience required.

5.0
(1)
5
hikers
8.57km
03:33
710m
710m
Moderate mountaineering route. Good fitness required. Easily-accessible paths. Suitable for all skill levels.
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Réservoir De Grand-Maison offers a variety of outdoor activities, including Road cycling, Touring cycling, Hiking, Jogging, Mountain biking, and Mountaineering. The region features 5 routes in total, with an average rating of 4.49 stars from over 42,000 visitors.
The region is characterized by its alpine setting in the French Alps, featuring Lac de Grand Maison at 5,561 feet (1,695 meters) altitude and the impressive Grand'Maison Dam. Lac du Verney, a lower reservoir at 2,526 feet (770 meters), is also a notable feature. The area is situated within the Romanche Valley.
Yes, komoot offers a dedicated guide for road cycling. Cyclists can explore routes with significant elevation gains and views of the Grand-Maison Dam. Find more information in the Road Cycling Routes around Réservoir De Grand-Maison guide.
The Réservoir De Grand-Maison region provides opportunities for hiking amidst alpine scenery. Hikers can find various trails suitable for different skill levels. Consult the Hiking around Réservoir De Grand-Maison guide for specific options.
Touring cyclists can find varied terrain and scenic routes in Réservoir De Grand-Maison. The region's roads, often designed for dam access, can offer good conditions for cycling. More details are available in the Cycling around Réservoir De Grand-Maison guide.
The Grand'Maison Dam is a significant engineering structure, 525 feet (160 meters) tall and 1,804 feet (550 meters) long, forming Lac de Grand Maison. It is part of France's largest hydroelectric facility, which also serves as Europe's largest pumped-storage hydroelectric plant. The Hydrélec museum provides information on this facility.
Yes, the region offers easy hiking options for those seeking less strenuous trails. These routes allow for enjoyment of the alpine environment without significant difficulty. Specific easy hikes can be found in the Easy hikes around Réservoir De Grand-Maison guide.
Réservoir De Grand-Maison is a popular destination, with more than 42,000 visitors having shared their experiences on komoot. The routes in the region have an average rating of 4.49 out of 5 stars, indicating high satisfaction among users.
Yes, Réservoir De Grand-Maison includes opportunities for mountain biking. The mountainous terrain provides varied conditions for MTB enthusiasts. Consult the MTB Trails around Réservoir De Grand-Maison guide for available routes.
The region offers various trails suitable for jogging and running amidst its alpine landscapes. Enthusiasts can explore paths that cater to different preferences. Details on specific routes are available in the Running Trails around Réservoir De Grand-Maison guide.
For official information regarding the hydroelectric facilities and the broader Isère-Drôme region, the website is edf.fr/isere-drome. This site provides context on the dam's operations and regional energy.

