Martigny-Mauvoisin Cycle Route

This route is considered a difficult road ride, requiring very good fitness. While the ascent is progressive, it is demanding, with significant elevation gain over its 75-kilometer length. It's one of the most spectacular and challenging routes in the Valais canton.

The route is mostly well-paved and suitable for road bikes. You'll encounter varied segments, including rolling sections, steeper inclines, and some flat areas. The journey includes short galleries (tunnels) and several wooden bridges over waterways. After Lourtier, a summer road on the right bank of the Dranse allows you to bypass two tunnels, one of which is very long. The final approach to the dam involves a tough climb, culminating in a tunnel that leads directly to the top of the dam wall.

You'll pass through the charming Martigny town center and La Bâtiaz Castle, and cycle through the magnificent Upper Val de Bagnes. The highlight of the tour is the impressive Mauvoisin Dam, one of the tallest arch dams in Europe. Along the way, enjoy views of iconic peaks like Mont Rogneux, Rosablanche, and the Grand Combin, as well as cascading waterfalls and the striking blue waters of the Fionnay Dam.

The best time to cycle this route is typically during the summer months when the weather is most favorable and all roads, including the 'summer road' after Lourtier, are open. The final approach to the dam, including the tunnel, is usually accessible during this period. Always check local conditions and road closures before you go, especially in early spring or late autumn.

No specific cycling permits are required to ride this route. The Upper Val de Bagnes is a protected landscape, but there are no entrance fees for cyclists. If you wish to visit the small museum inside the Mauvoisin Dam, there might be a small fee, but access to the dam wall itself is generally free.

While the route is on paved roads, it is a challenging road cycling trip. Bringing a dog along for such a demanding ride, especially on a racebike, is generally not recommended due to the distance, elevation, and potential for traffic. If you plan to bring a dog, ensure they are safely secured in a bike trailer designed for such conditions and that they can handle the duration and environment.

You can typically find parking in Martigny, for example, near the train station or in public parking areas within the town center. From there, you can easily start your cycling journey towards the Mauvoisin Dam. Be sure to check local parking regulations and fees.

Yes, sections of this route overlap with several other paths. You'll find yourself on parts of the Via Francigena - 03 part Switzerland, Chemin du 700ème, Promenade de la Dranse, and Tour des Villages, among others. These intersections offer glimpses into other regional routes, though your primary focus will be the challenging ascent to the dam.

After passing through Lourtier, there's a recommended 'summer road' on the right bank of the Dranse. This alternative route allows cyclists to bypass two tunnels, one of which is very long, making for a safer and more enjoyable experience. It winds through small hamlets, past fast-flowing streams, and fields of wildflowers, offering a timeless atmosphere before the final climb to the dam.

As you pass through villages such as Versegères, Champsec, Lourtier, Fionnay, and Bonatchiesse, you may find opportunities for cafes or to refill water bottles. However, services become sparser as you ascend into the higher, more remote sections of the Upper Val de Bagnes. It's always wise to carry sufficient water and snacks for the entire demanding journey.

The Upper Val de Bagnes is a protected landscape, offering chances to spot diverse wildlife. Keep an eye out for ibex, chamois, and even bearded vultures. The area also boasts a rich variety of alpine flora, especially in the green valleys and fields of wildflowers you'll pass through.

Yes, if you wish to focus solely on the dedicated climb to the Mauvoisin Dam and avoid the initial busy international road sections from Martigny, it is advised to take the train between Martigny and Le Châble. From Le Châble, you can begin the more direct and equally spectacular ascent to the dam.