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Tour des Combins: Conca di By to Mont Avril Trail

Routes
Hiking trails & Routes
Italy
Aosta Valley
Ollomont

Tour des Combins: Conca di By to Mont Avril Trail

Hard

4.9

(8)

77

hikers

Tour des Combins: Conca di By to Mont Avril Trail

08:07

17.1km

1,240m

Hiking

Hike the difficult 10.6-mile Tour des Combins: Conca di By to Mont Avril Trail, gaining 4082 feet with stunning alpine views.

Last updated: February 26, 2026

Waypoints

A

Start point

Parking

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8.07 km

Fenêtre de Durand

Mountain Pass

2

13.7 km

View of the By Basin

Highlight • Viewpoint

Nice view of the reservoir, the valley and the mountains.

Translated by Google •

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3

14.6 km

Casa Luigi Einaudi

Highlight • Historical Site

Located at about 2,000 meters above sea level in the picturesque By basin, this historic stone dwelling offers you a stop of great cultural value along the trails of Valpelline. …

Showing Translation

Tip by

4

14.7 km

The By basin extends over a wide plateau in the lower part of which lies the small By lake, surrounded by an amphitheater of peaks reaching almost 3,000 meters. Once …

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Tip by

5

15.9 km

Mule track to the By Dam

Highlight • Trail

B

17.1 km

End point

Parking

Loading

Way Types & Surfaces

Way Types

12.7 km

4.20 km

188 m

Surfaces

9.23 km

5.20 km

1.06 km

993 m

569 m

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Elevation

Elevation
Nothing selected – click and drag below to see the stats for a specific part of the route.

Highest point (2,790 m)

Lowest point (1,550 m)

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Weather

Powered by Foreca

Friday 9 October

8°C

1°C

76 %

Additional weather tips

Max wind speed: 7.0 km/h

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Frequently Asked Questions

Where does the Tour des Combins: Conca di By to Mont Avril Trail start, and is there parking available?

While the exact trailhead for this specific segment isn't detailed, the route generally begins in the Conca di By area. For parking, you would typically look for options near the start of the mule tracks leading towards the By Dam. Public transport options to remote alpine valleys like Conca di By can be limited, so driving is often the most practical way to access the area.

What is the best time of year to hike this trail?

The best time to hike this trail, and the broader Tour des Combins region, is typically from early July to mid-September. During this period, most of the snow has melted from the higher passes, and the weather is generally more stable for high-alpine hiking.

Is the Tour des Combins: Conca di By to Mont Avril Trail dog-friendly?

Generally, dogs are allowed on trails in the Tour des Combins region. However, given the high-alpine environment, potential wildlife encounters (like marmots), and the presence of grazing livestock in alpine pastures, it's highly recommended to keep dogs on a leash. Always be mindful of local regulations and respect other hikers and animals.

Are there any permits or fees required for this trail?

For hiking the Tour des Combins: Conca di By to Mont Avril Trail itself, there are typically no specific permits or entrance fees required. However, if you plan to stay in mountain huts or use any private facilities along the way, charges will apply.

What kind of terrain can I expect on this hike?

You can expect highly varied and challenging terrain. The route traverses everything from lush valleys with streams and coniferous forests to rugged, rocky mountainsides. Sections may include well-beaten slopes in alpine pastures, winding pathways through larch trees, and mule tracks like the Mule track to the By Dam. As you approach areas like Mont Avril and the Fenêtre de Durand pass, expect dramatic high mountain scenery with potential for rocky sections and significant elevation changes.

What can I see along the route?

Along the route, you'll encounter breathtaking alpine scenery and several notable features. You can enjoy a View of the By Basin, pass by the Casa Luigi Einaudi, and see the Conca di By, Dam and Little Church. The trail also offers spectacular views of 4,000-meter alpine peaks, glacial rivers, and waterfalls, especially in the higher sections near Mont Avril and the Fenêtre de Durand pass.

Does this trail intersect with other well-known paths?

Yes, this route is part of the broader Tour des Combins network and intersects with several official trails. You will find yourself on sections of the Tour des Combins - Stage 6 - CABANE CHANRION – CABANE LETEY À CHAMPILLON, Col Fenêtre - Mont Avril, Mulattiera Glassier Pont, Mulattiera Pont By, and Strada Agricola By Alpe Martinet, among others.

What wildlife might I encounter on the trail?

The valleys and high-alpine environments along the Tour des Combins are home to various wildlife. You might spot marmots in the rocky areas and potentially encounter other alpine animals. Birdwatching opportunities are also present in this diverse ecosystem.

Is this trail suitable for beginners?

No, this trail is rated as difficult and is generally not suitable for beginners. It involves significant elevation changes, rocky sections, and high-alpine exposure. Hikers should have a good level of physical fitness, experience with mountain hiking, and be prepared for challenging conditions. The broader Tour des Combins is considered more demanding than trails like the Tour du Mont Blanc.

What should I bring for a hike on this trail?

Given the difficult rating and high-alpine environment, you should bring appropriate gear. This includes sturdy hiking boots, layers of clothing suitable for varying weather conditions (even in summer), rain gear, plenty of water and snacks, a map and compass or GPS device, sun protection, and a first-aid kit. Trekking poles are highly recommended for stability on uneven terrain and during ascents/descents.

Are there any facilities like cafes or accommodation near the trail?

While the Tour des Combins is known for being more secluded than other popular alpine routes, there are typically mountain huts (refuges) and small villages along the broader multi-day route that offer accommodation and basic services. Near the Conca di By area, you might find limited facilities, but it's always best to research and book ahead, especially for overnight stays. Don't expect frequent cafes directly on the trail; plan to be self-sufficient for food and water during your hike.

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