Millau, Causse Noir, and Gorges du Tarn Loop

This route is classified as a "Hard gravel ride" and demands very good fitness. It's considered "Très difficile" (very difficult) and a long ride. The ascent to Pouncho d'Agast alone is a Category 2 climb, with sections reaching up to 10.1% gradient. You'll need a bike equipped with climbing gears, and be prepared that some portions may be so challenging you might need to push your bike.

The terrain is incredibly diverse, offering a mix of accessible gravel tracks, rustic roads, rolling paths, and forest trails. You'll also encounter small singletrack sections in the undergrowth, with some "raw terrain" and more technical segments. Approximately two-thirds of the route consists of roads and one-third of tracks.

You can expect consistently breathtaking scenery, including vast limestone plateaus, deep canyons, dramatic cliffs, and unique geological formations. Key highlights include traversing the Gorges du Tarn with views of the Tarn River, climbing onto the Causse Noir with its distinctive pines and rocks, and panoramic views of the Millau Viaduct. The trail also leads to the Pouncho d'Agast, offering stunning vistas over Millau and the surrounding river valley.

While the exact starting point can vary, Millau is a common access point for this region. You'll find parking options in and around Millau, which provides good access to the Gorges du Tarn and the Causse Noir. Specific trailhead parking information is best checked locally or on detailed maps before your ride.

The Grands Causses region is generally best enjoyed during spring, early summer, and autumn. These seasons offer more pleasant temperatures for challenging rides, avoiding the intense heat of mid-summer. Always check local weather forecasts before you go, as conditions can change rapidly in mountainous areas.

No, there are no specific entrance fees or permits required to access the Parc naturel régional des Grands Causses itself. However, as with any natural park, visitors are expected to respect local regulations regarding environmental protection, wild camping, and fire safety. Always stay on marked trails and leave no trace.

While dogs are generally welcome in the Parc naturel régional des Grands Causses, it's crucial to keep them on a leash, especially due to the presence of wildlife and livestock. Given the challenging nature of this particular gravel route, with technical sections and significant climbs, consider if it's truly suitable for your dog's fitness and paw health.

Yes, this route shares sections with several other trails. You'll find yourself on parts of the VdT 07 : Millau - Saint-Rome-du-Tarn, GR6205 - De Longuiers à Millau, and Espace trail Millau Grands Causses 1 Millau / Le Monna. It also briefly crosses the VdT 06 : Le Rozier - Millau and the Corniches du Larzac, among others.

The region around the Gorges du Tarn and Millau offers various options for food, drinks, and accommodation. While the trail itself passes through some remote areas, towns like Millau and picturesque villages such as Peyreleau will have cafes, restaurants, and lodging. It's advisable to plan your stops in advance and carry sufficient water and snacks, especially on longer, more isolated sections.

Given the difficulty and length, pack essentials like plenty of water, high-energy snacks, a repair kit (including spare tubes, pump, and multi-tool), and appropriate clothing layers for varying weather conditions. A first-aid kit, navigation device (like komoot on your phone), and a headlamp are also highly recommended. Don't forget your helmet and suitable cycling shoes.

The ascent to Pouncho d'Agast is a significant challenge, stretching 8.3 km with an average gradient of 5.7% and sections up to 10.1%. The best strategy is to pace yourself, utilize your climbing gears effectively, and be prepared for a sustained effort. Don't be afraid to take short breaks if needed, and remember the panoramic views at the top are a well-earned reward.