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

03:34

53.3km

1,020m

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: September 24, 2026

Tips

Your route passes through protected areas

Please check local regulations for:

Parc naturel régional des Monts d'Ardèche

Waypoints

Start point

Parking

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12.7 km

The Rest Stop Quay

Highlight • Other

Restaurant, snack bar, small grocery store and children's games

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14.1 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 the arches of the road that run along the greenery-covered rock faces.

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22.9 km

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

Highlight • Viewpoint

26.3 km

Viaduct on the Dolce Via

Highlight • Bridge

28.1 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 view, a trip through a tunnel is still a very special and, on a hot day, particularly refreshing experience on a bike tour. This tunnel is even illuminated and, at 320 metres, is the longest on the entire Dolce Via.

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35.2 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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39.8 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 - the perfect spot to refresh yourself during a bike tour. Nearby you can also admire the ruins of an old castle, which are now completely overgrown with plants.

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41.9 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 to 1891, the railway line goes up the gorges from Saint-Jean-de-Muzol to Lamastre. This old steam locomotive takes you back in time. It is possible to make the trip with bicycles. Remember to book your tickets well in advance, especially during the summer.

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