Réserve Biologique Intégrale De Merdassiers Nant Pareux
Réserve Biologique Intégrale De Merdassiers Nant Pareux
4.4
(32)
383
riders
28
rides
Gravel biking in Réserve Biologique Intégrale De Merdassiers Nant Pareux offers routes through the eastern Aravis mountain range in the French Alps. The area features diverse landscapes, including dense forests, mountain pastures, and wider forest roads. Riders can expect varied terrain around prominent locations like the Col de Merdassier, with routes traversing the foothills of peaks such as Treu and Tête de l'Aulp, and encompassing parts of the upper Flon valley. This mountainous setting provides demanding ascents and descents.
Last updated: October 6, 2026
5.0
(3)
32
riders
28.8km
02:18
870m
870m
Hard gravel ride. Very good fitness required. Mostly paved surfaces. Suitable for all skill levels.
4.2
(5)
58
riders
43.2km
05:22
1,320m
1,320m
Hard gravel ride. Very good fitness required. Mostly paved surfaces. Suitable for all skill levels.

4.8
(5)
25
riders
33.8km
02:31
920m
920m
Hard gravel ride. Very good fitness required. Mostly paved surfaces. Suitable for all skill levels.
5.0
(2)
12
riders
33.4km
02:50
1,150m
1,150m
Hard gravel ride. Very good fitness required. Mostly paved surfaces. Suitable for all skill levels.
3.0
(1)
5
riders
27.5km
02:34
1,070m
1,070m
Hard gravel ride. Very good fitness required. Mostly paved surfaces. Suitable for all skill levels.
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Nice small pass, decent but steady climb. Great views and a nice restaurant at the pass, Refuge Auberge du Col de l'Arpettaz
3
0
Beautiful descent from the Aravis on the D909.
3
0
Nice gimmick in the village.
2
0
Magnificent view from the pass, but impossible on gravel.
1
0
Incredibly beautiful road, and quite demanding on gravel
1
0
All 20 gravel biking routes in the Réserve Biologique Intégrale De Merdassiers Nant Pareux area are rated as difficult. Riders should expect significant elevation gains and varied terrain, suitable for experienced cyclists.
While the gravel biking routes themselves are challenging, the area near the Col de Merdassier offers a free 'fun nature trail in the forest' with games and workshops, which can be a complementary outdoor activity for families.
The Col de Merdassier is a central hub for activities in the region and provides practical amenities, including parking, making it a good starting point for many routes.
Given its location in the French Alps, the best time for gravel biking is typically during the warmer months, from late spring to early autumn, when trails are clear of snow and weather conditions are most favorable for alpine riding.
The trails offer superb panoramas of the surrounding Aravis mountains and the entire Manigod valley. You can expect dramatic alpine scenery, including views of peaks like Treu, Trois Aiguilles, Tête de l'Aulp, and Goenne, especially from vantage points like the Col de Merdassier and the Tête de Cabeau.
Yes, several routes are designed as loops, allowing you to start and finish at the same point. Examples include the Col des Saisies – Col du Very loop from Crest-Voland and the Col des Saisies – Col de la Lézette loop from Crest-Voland.
The terrain is varied, featuring a mix of wider forest roads and potentially more technical paths. You'll traverse dense forests, alpine pastures, and marked mountain biking paths, often with significant elevation changes.
The Col de Merdassier, a prominent location in the area, offers practical amenities including bar-restaurants, which are convenient for refueling before or after your ride.
The area is highly rated by the komoot community, with an average score of 4.3 stars. Reviewers often praise the challenging alpine terrain, the stunning panoramic views, and the diverse landscapes that include dense forests and mountain pastures.
The Réserve Biologique Intégrale De Merdassiers Nant Pareux itself is a strictly protected area focused on natural forest evolution. While gravel biking is popular in the surrounding periphery, it's important to respect local signage and stay on designated trails to protect the natural environment.
As an integral biological reserve, the area is a vital 'reservoir of biodiversity.' While specific wildlife sightings are not guaranteed, the rich environment supports diverse species, including various birds, small mammals, and insects. Riders should observe wildlife from a distance and avoid disturbing their habitats.
All 20 routes in the region are rated as difficult, offering significant challenges. For an extensive and demanding ride, consider the Col des Aravis – Col des Saisies loop from Saint-Nicolas-la-Chapelle, which covers 108 km with substantial elevation gain.
The longest route is the Col des Aravis – Col des Saisies loop from Saint-Nicolas-la-Chapelle, which spans 108 kilometers and connects two major cols, offering a full day of varied scenery and sustained climbs.


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