7/ Les Nonières - Lamastre
© Paul Villecourt / outdoor-reporter.com
Discover the Doux Valley
The 12-km section linking Lamastre and Les Nonières follows the River Sumène as far as Saint-Prix, where it crosses the village and continues a few kilometres towards the Medieval village of Désaignes (classified a "village de caractère").
Along this section of the cycle path, the technical expertise involved in building the former rail track in particulary evident. Look out for some impressive retaining walls, bridges, viaducts and tunnels - the tunnel at Les Nonières in the longest one found along La Dolce Via, continuing for 320 metres ... with lighting ! The viaduct at Saint-Prix consists of five 12-metre arches plus a smaller arch that crosses above the road. Lamastre, a town well-known in the world of cinema, as several films, or parts of them at least, have been shot here (Les Cracks, The Judge and the Assassin, La Colline aux Mille Enfants, and The Children of the Marshland), it is also the terminus of the Mastrou, the legendary steam train. There’s no better way to explore the Doux Gorges.
Accès Lamastre
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Accès Les Nonières
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Alert
🚲 Dolce Via – Roadworks in Saint-Martin-de-Valamas
From 19 to 30 October 2026, the RD120 road will be closed during the day (7:30 am–6:00 pm) at the bridge over the Saliouse.
⚠️ The local diversion will use part of the Dolce Via. Cyclists, please take extra care and follow the signs near the roadworks and while travelling along the diversion route.
The road will reopen every evening from 6:00 pm and at weekends.
