Wild Valleys of Belleville: 3 Days of Trekking in the Heart of Nature

Wild Valleys of Belleville: 3 Days of Trekking in the Heart of Nature

  • 3 Days
  • From June to September

An unforgettable immersion into the vast landscapes of Belleville

Looking to escape into the heart of the Alps and immerse yourself in raw, untouched nature? The Wild Valleys of Belleville trek invites you to adventure, contemplation, and self-discovery. Over three days, you’ll traverse diverse landscapes, from dense forests and vast alpine pastures to high-altitude passes with breathtaking panoramas. This trek unveils a valley where time seems to stand still, far from the bustle of ski resorts, where only the whispers of the wind and the songs of birds break the silence.

Each stage is designed to offer a unique experience: a first gentle day to acclimate and soak up the mountain atmosphere, a second more demanding day that will take you through secret and wild valleys, and finally, a last day that will gradually bring you back to your starting point, with a majestic descent between ridges and spectacular gorges.

Sunset in Saint Martin
Sunset in Saint Martin
Plan Lombardie Mountain Refuge in Saint-Martin-de-belleville
Plan Lombardie Mountain Refuge

Day 1: La Flachère → Plan Lombardie Mountain Refuge

  • Distance: 5.76 km

Elevation gain: 436 m

Difficulty: Moderate

Points of interest:

Longefrasse Forest

Nant Brun Footbridge

La Sauce Hamlet

Plan Lombardie Mountain Refuge

This first day is easy-going and accessible, perfect for warming up before the next two days, which will require more effort. The trek starts from La Flachère, a charming authentic hamlet nestled deep in the Belleville Valley. After a gentle initial climb through Longefrasse Forest, you will reach the Deux-Nants junction before crossing the Nant Brun footbridge. The trail then leads through La Sauce, another high-altitude hamlet, before beginning the final ascent to Plan Lombardie Mountain Refuge, where you will spend your first peaceful night.

Day 1: La Flachère → Plan Lombardie Mountain Refuge
Distance -- km
Elevation gain --- m
Max altitude --- m
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The Belleville Valley
The Belleville Valley

Day 2: Plan Lombardie Mountain Refuge → Gittamelon Mountain Refuge

Distance: 18.08 km

Elevation gain: 893 m

Difficulty: Challenging

Points of interest:

  • Nant Brun Valley

Col du Bonnet du Prêtre

  • Col du Châtelard

Encombres Valley

Gittamelon Mountain Refuge

This day takes you through a wild and untouched environment. From the mountain refuge, you descend back to La Sauce before entering the Nant Brun Valley, where the only sounds accompanying your ascent are those of rushing streams and wildlife. After a gradual climb, you will reach Col du Bonnet du Prêtre, then continue towards Col du Châtelard. The crossing of the Varlossière valley and the Encombres Valley reveals stunning Alpine landscapes, blending flower-filled pastures with steep rocky slopes. You will finally arrive at Gittamelon Mountain Refuge, a true haven of peace, tucked away from the more frequented trails.

Encombres Valley in Saint-Martin
Encombres Valley
Day 2: Plan Lombardie Mountain Refuge → Gittamelon Mountain Refuge
Distance -- km
Elevation gain --- m
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Encombres Valley in belleville valley
Encombres Valley
Nant Brun Valley Saint martin
Nant Brun Valley

Day 3: Gittamelon Mountain Refuge → La Flachère

Distance: 14.53 km

Elevation gain: 803 m

Difficulty: Moderate

Points of interest:

Priots Hamlet

Planlebon Gorges

Planlebon Hamlet

Pointe de Daillait

Col de la Machoui

For this final stage, you begin the descent by passing through Priots Hamlet, then reach Frachettes parking area. The trail winds through the Planlebon Gorges, offering a spectacular setting before crossing the remains of Planlebon Hamlet. The hike continues towards La Gittaz, followed by a final ascent to Pointe de Daillait and Plan des Queux. From Col de la Machoui, you start the last descent towards La Flachère, marking the end of this immersive journey through the Wild Valleys of Belleville.

Day 3: Gittamelon Mountain Refuge → La Flachère
Distance -- km
Elevation gain --- m
Max altitude --- m
Start altitude --- m
Saint-Jean-de-Belleville
Saint-Jean-de-Belleville

Practical Information

Best period: July to September

Level: Intermediate to experienced hikers

Accommodations: Guarded mountain refuges with meal services

Recommended equipment: Hiking shoes, clothing suited for mountain conditions, backpack with water and snacks

Access to the starting point:

By public transport: Train + shuttle, information available at the Saint-Martin-de-Belleville Tourist Office

By car: 2h15 from Lyon, 1h20 from Chambéry

Les 3 Vallées

The Most Beautiful Treks
of Les 3 Vallées

Escape to the heart of Les 3 Vallées with our most stunning trekking routes. Between panoramic ridges, hidden valleys, and welcoming mountain refuges, set off on a unique adventure in nature. Whether you're a seasoned hiker or seeking an escape, explore our exceptional itineraries for an unforgettable mountain journey!