Chasseral Loop from Villiers

The trail officially starts from Parking La Dame. This is your primary access point for beginning the run.

No, this loop is categorized as an expert run. It involves significant elevation changes and can have technical sections, making it quite demanding. It's best suited for runners with good fitness and experience with challenging trail running.

The terrain is highly varied. You'll start with gentle paths through meadows and forest edges, then ascend into a deep beech forest. The path becomes steeper and winds through the Combe Biosse, a deep incision in the mountain. Expect sections that traverse pastures and forest paths, with some parts in the Combe Biosse area being quite technical, featuring narrow paths between rocky walls. Sure-footedness is required.

This loop offers diverse and picturesque scenery. You'll pass through the La Combe Biosse itself, a natural reserve with impressive cliffs and unique flora and fauna. There are also enchanting views, especially from the View from the Métairie de Chuffort, and breathtaking vistas of the valley and mountains from the ridges.

On average, runners can expect to complete this 12.1 km loop in approximately 1 hour and 43 minutes, though this can vary based on individual fitness and pace due to the difficult rating and significant elevation gain.

Yes, the route also passes through sections of the Jura Crest Trail (37% of the route), the European long distance path E4 - part Switzerland (37%), L'Essert (6%), and Chemin de l'Isle (3%).

Given the varied terrain and potential for technical sections, late spring through early autumn is generally the best time. This avoids snow and ice, which could make the more challenging parts of the trail hazardous, especially in the gorge-like sections of Combe Biosse.

While the trail is located within Parc Chasseral, which generally welcomes dogs, it's always best to keep your dog on a leash, especially given the varied terrain and potential for wildlife encounters in this natural reserve. Be prepared for technical sections that might be challenging for some dogs.

No, there are typically no permits required or entrance fees to access the trails within Parc Chasseral, including the La Combe Biosse loop. However, always respect local regulations and the natural environment of this preserved area.

Given the trail's difficulty and varied terrain, it's crucial to bring appropriate gear. This includes sturdy trail running shoes with good grip, sufficient water and snacks, a map or GPS device (like komoot's app), and layers of clothing suitable for changing mountain weather. Trekking poles might also be beneficial for the steeper and more technical sections.

While the trail offers a preserved and quiet environment, options for cafes, pubs, or accommodation directly at Parking La Dame are limited. It's advisable to check for services in nearby villages or towns within the Chasseral region before or after your run.