Col d'Herbouilly and Gorges de la Bourne Loop

This challenging touring bicycle loop is approximately 51.5 kilometers long and typically takes around 4 hours to complete, depending on your pace and stops.

The route features a mix of mostly paved surfaces, with some sections of the Via Vercors consisting of hard gravel trails. These gravel sections are suitable for touring bikes. You'll encounter significant climbs, including the ascent to Col d'Herbouilly.

You'll experience the varied and spectacular landscapes of the Parc naturel régional du Vercors. Expect massive vertical cliffs, deep gorges like The Bourne Gorge, expansive grassy plateaus, and large forested areas. The scenery changes frequently, offering views from shaded forest roads to open vistas, with opportunities to spot wildlife such as wild boar, deer, and various birds.

The Vercors region is generally best for cycling from late spring through early autumn. During these months, the weather is more favorable, and the roadsides can be filled with flowers like lavender. Always check local weather conditions before you go, especially for mountain passes.

This loop is rated as 'difficult' and requires 'very good fitness'. With approximately 1,300 meters of elevation gain over 51.5 kilometers, it presents a significant challenge, particularly due to demanding climbs like the one to Col d'Herbouilly.

A common starting point with parking is in or around Villard-de-Lans. This allows for convenient access to the loop and the Via Vercors sections.

Generally, no specific permits or entrance fees are required for cycling on public roads and designated cycle paths within the Parc naturel régional du Vercors. However, always respect local regulations, especially concerning protected areas and private property.

While dogs are generally allowed in the Parc naturel régional du Vercors, it's crucial to keep them on a leash, especially in natural areas, to protect wildlife and ensure their safety on cycling routes. Consider the difficulty and length of the ride when deciding if it's suitable for your dog.

Yes, this loop incorporates sections of several other official cycling paths. You'll ride along parts of the P'tites Routes du Soleil, Grand Tour du Vercors, and various segments of the Via Vercors, including 'ViaVercors : Villard de Lans - Corrençon en Vercors' and 'ViaVercors : Villard de Lans - Méaudre'.

Yes, the Vercors region offers various amenities. You'll find cafes, restaurants, and accommodation options in towns like Villard-de-Lans, which is often a starting point for this loop. It's advisable to plan your stops, especially in less populated areas.

The climb to Col d'Herbouilly from Les Barraques en Vercors is longer and has steeper sections, while the approach from Villard-de-Lans is described as a more pleasant climb, mostly through the forest. If you prefer a slightly less intense ascent, consider planning your route to take the Villard-de-Lans approach to the Col.