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Nonières Tunnel – Trail along the Sumène loop from Cluac

Nonières Tunnel – Trail along the Sumène loop from Cluac

Hard

riders

Nonières Tunnel – Trail along the Sumène loop from Cluac

03:25

50.6km

990m

Gravel riding

Hard gravel ride. Very good fitness required. Mostly paved surfaces. Suitable for all skill levels. The starting point of the route is right next to a parking lot.

Last updated: March 28, 2026

Tips

Your route passes through protected areas

Please check local regulations for:

Parc naturel régional des Monts d'Ardèche

Waypoints

Start point

Parking

Get Directions

11.4 km

Dolce Via Section Through the Gorges of the Eyrieux

Highlight • Trail

Here, you're in the heart of the Monts d'Ardèche Regional Natural Park. This is one of the most beautiful sections of the Dolce Via along the Eyrieux Gorges. You'll appreciate …

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19.3 km

Collanges Dam and Lake

Highlight • Other

In the heart of the Eyrieux gorges, we find this gigantic dam which gives birth to the Lac des Collanges. The site is magnificent and illustrates well how humans and nature coexist!

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19.6 km

View of the Barrage de la Ville (Parc naturel régional des Monts d'Ardèche)

Highlight • Viewpoint

to swim, get in the shade, or fill your cans (wc, water...etc)

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20.2 km

View of the River in Parc Naturel Régional des Monts d'Ardèche

Highlight • Viewpoint

25.4 km

Nonières Tunnel

Highlight • Cycleway

The great thing about old railway tunnels on a cycle route: They often save you a tedious road over a pass. Although you sometimes lose a bit of a good …

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32.5 km

Trail along the Sumène

Highlight (Segment) • Trail

This path runs along the Sumène, a small river that can sometimes be glimpsed among the trees. This section alternates shaded parts with segments in full sun, just to vary the pleasures!

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37.1 km

Retourtour swimming area

Highlight • Beach

The small swimming lake in the village of Retourtour is there thanks to the minimal damming of the Doux river. Even a small pebble / sand beach was created - …

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39.2 km

Old Lamastre train station

Highlight • Historical Site

The old Lamastre station is the arrival point of the Ardèche train. Called Le Mastrou, this train takes you on a discovery of the Gorges du Doux. Built from 1886 …

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50.6 km

End point

Parking

Way Types & Surfaces

Way Types

23.0 km

20.3 km

6.52 km

696 m

166 m

Surfaces

15.9 km

14.9 km

11.7 km

8.02 km

166 m

Elevation

Nothing selected – click and drag below to see the stats for a specific part of the route.

Highest point (810 m)

Lowest point (330 m)

Weather

Sunday 24 May

31°C

15°C

0 %

Additional weather tips

Max wind speed: 13.0 km/h

to get more detailed weather forecasts along your route

Our route recommendations are based on thousands of hikes, rides, and runs completed by other people on komoot.

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Nonières Tunnel – Trail along the Sumène loop from Cluac

Dolce Via Section Through the Gorges of the Eyrieux

Collanges Dam and Lake

View of the Barrage de la Ville (Parc naturel régional des Monts d'Ardèche)

View of the River in Parc Naturel Régional des Monts d'Ardèche

Nonières Tunnel

Trail along the Sumène

Retourtour swimming area

Old Lamastre train station

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