5.0
(2)
30
riders
3
rides
Gravel biking around Le Lac-D'Issarlès offers routes through a landscape shaped by ancient volcanic activity, featuring deep crater lakes and distinctive basalt flows. The region is characterized by mid-mountain terrain, extensive forests, and volcanic peaks, providing varied surfaces for gravel cyclists. These no traffic gravel bike trails navigate through the Monts d'Ardèche Regional Nature Park, offering routes with significant elevation changes.
Last updated: July 12, 2026
17
riders
118km
09:18
2,210m
2,210m
Hard gravel ride. Very good fitness required. Mostly paved surfaces. Suitable for all skill levels.
3
riders
39.4km
03:18
870m
880m
Hard gravel ride. Very good fitness required. Mostly paved surfaces. Suitable for all skill levels.

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1
riders
31.0km
02:16
520m
510m
Hard gravel ride. Very good fitness required. Mostly paved surfaces. Suitable for all skill levels.
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Etymology: comes from Mas d’Adam, the name of the old estate that was located on the site of the current village, which was ceded by the lord of Géorant to the bishop of Viviers to allow him to found the abbey of Mazan. It all begins with the foundation of the Cistercian abbey in the heart of the village. This takes place between 1119 and 1122. At the beginning of the 12th century, canons came to settle on the site of Mas d’Adam (a toponym that would evolve into MAZAN), and were joined by monks from the abbey of Bonnevaux. These religious men built a huge abbey, of which only the remains exist today, which experienced a period of apogee that lasted until the Hundred Years' War. It gave birth to four other abbeys which are Bonneval, Sénanque, Sylvanès and le Thoronet as well as establishments for nuns. After this prosperous period, misfortunes followed one another at the abbey of Mazan: it was plundered by the great companies of the Hundred Years' War, then attacked by the Huguenots in the modern period. Before this last looting, the monks, according to legend, would have melted a golden bell with all their treasures, which they would have buried somewhere, facing and opposite the bull's-eye window, within earshot of the rooster's crow. montagnedardeche.com/patrimoine-culturel/village-de-mazan-labbaye-2387
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Etymology: comes from Mas d’Adam, name of the old domain which was located at the site of the current village which was ceded by the lord of Géorant to the bishop of Viviers to allow him to found the abbey of Mazan. It all begins with the foundation of the Cistercian abbey in the heart of the village. This takes place between 1119 and 1122. At the beginning of the 12th century, canons came to settle on the site of Mas d’Adam (toponym that would evolve towards MAZAN), and were joined by monks from the abbey of Bonnevaux. These religious men built an immense abbey, of which only the remains are left today, which experienced a period of apogee that lasted until the Hundred Years' War. It gave birth to four other abbeys which are Bonneval, Sénanque, Sylvanès and le Thoronet as well as establishments of nuns. After this prosperous period, misfortunes followed one another at the abbey of Mazan: it was plundered by the great companies of the Hundred Years' War, then attacked by the Huguenots in the modern period. Before this last pillage, the monks, according to legend, would have melted a golden bell with all their treasures, which they would have buried somewhere, opposite and in front of the bull's eye, within earshot of the cock's crow. https://www.montagnedardeche.com/patrimoine-culturel/village-de-mazan-labbaye-2387/
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These ruins once housed the Choisinets castle and orphanage. The construction of this unusual building spanned the entire second millennium. The ruins of two towers dating from the 12th and 17th centuries are still in good condition, testifying to the various architectural influences.
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Market on Tuesdays (summer) and Saturdays
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There we found the Meteil bread seller (a mixture of rye and sourdough) from the previous day's market in Costaros, under the market hall. Producers of fruit and vegetables, cheeses, and charcuterie. Everything for an ideal picnic.
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Must have been a monastery or something similar. Unfortunately the entrance is blocked 🤷🏻♂️👍🙂
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Cemetery of St-Cirgue-en-Montage. Outside, to the left of the entrance.
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There are currently 3 dedicated no-traffic gravel bike trails listed in this guide for the Le Lac-D'Issarlès area. These routes are designed to offer a peaceful cycling experience away from vehicular traffic.
The region around Le Lac-D'Issarlès is characterized by its unique volcanic landscapes, including ancient volcanoes known as 'sucs' and distinctive basalt flows. You'll encounter a mix of forest paths, mid-mountain terrain, and varied surfaces suitable for gravel biking. Expect some elevation changes, as the area sits at around 1,000 meters altitude, offering scenic climbs and descents.
The trails in this guide are generally considered difficult, featuring significant distances and elevation gains. For example, the Lake Naussac – Lake Naussac loop from Le Lac-d'Issarlès covers over 118 km with more than 2,200 meters of elevation gain, making it suitable for experienced gravel bikers.
You'll be cycling through the stunning Monts d'Ardèche Regional Nature Park, known for its volcanic origins. Expect to see the deep, turquoise Lac d’Issarlès, ancient volcanic peaks like Mount Gerbier de Jonc (the source of the Loire river), and lush green forests. The varied landscape provides constant scenic beauty.
Absolutely! Beyond the natural beauty, you can encounter significant landmarks. The Mount Gerbier de Jonc is a prominent volcanic peak offering expansive views. You might also pass through charming settlements like Mazan-l'Abbaye, which is part of the Mazan Abbey loop from Saint-Cirgues-en-Montagne route.
While the routes in this specific guide are rated as difficult due to their length and elevation, the region around Le Lac-D'Issarlès does offer easier paths. The 3.6 km to 5 km footpath encircling Lac d'Issarlès is ideal for leisurely walks and could be suitable for very young riders on appropriate bikes, though it's not a dedicated gravel trail. For dedicated family-friendly gravel routes, you might need to explore other guides focusing on easier terrain in the wider Ardèche region.
Yes, all the no-traffic gravel routes featured in this guide are circular, allowing you to start and end at the same point. For instance, the Lac d’Issarlès – Bridge over the Loire loop offers a substantial circular ride exploring the local landscape.
Le Lac-D'Issarlès itself offers parking facilities, especially near the lake. For specific trailheads, it's advisable to check the individual tour details on komoot, as many routes start from villages or designated parking areas within the Monts d'Ardèche Regional Nature Park. Parking is generally available in the main towns and villages that serve as starting points for these routes.
Public transport options directly to specific trailheads in this rural area can be limited. While regional bus services connect larger towns in the Ardèche, direct access to all starting points for gravel trails might require a car. It's best to check local transport schedules in advance if you plan to rely on public transport.
The area is highly rated by the komoot community, with an average score of 5.0 stars. Reviewers often praise the stunning volcanic landscapes, the tranquility of the no-traffic routes, and the challenging yet rewarding climbs that offer panoramic views of the lake and surrounding 'sucs'.
Le Lac-D'Issarlès, being a popular tourist destination, has several cafes and restaurants, particularly around the lake itself. As you venture onto the trails, options become scarcer, so it's always a good idea to carry sufficient water and snacks. Some of the larger villages along the longer routes, such as Mazan-l'Abbaye, may offer amenities.


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