5.0
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167
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Gravel biking around Oyace offers diverse terrain within Italy's Aosta Valley, situated at 1377 meters in the Valpelline valley. The region is characterized by alpine landscapes, surrounded by the rocky peaks of the Morion chain and bisected by the Buthier river. Riders encounter white roads winding through vineyards, forests, and villages, with trails that can be steep, off-camber, and loose. This environment provides an authentic mountain cycling experience for those seeking no traffic gravel bike trails.
Last updated: July 14, 2026
4
riders
16.1km
01:40
270m
270m
Moderate gravel ride. Good fitness required. Mostly paved surfaces. Suitable for all skill levels.
38.8km
05:03
1,550m
1,020m
Hard gravel ride. Very good fitness required. You may need to push your bike for some segments of this route.

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50
riders
51.6km
03:27
730m
730m
Hard gravel ride. Very good fitness required. Mostly paved surfaces. Suitable for all skill levels.
15
riders
28.8km
02:15
670m
670m
Hard gravel ride. Very good fitness required. Mostly paved surfaces. Suitable for all skill levels.
7
riders
25.1km
01:53
460m
460m
Hard gravel ride. Very good fitness required. Mostly paved surfaces. Suitable for all skill levels.
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Il Prarayer is an alpine plateau located at about 2000 meters above sea level, at the end of the Place-Moulin lake. It is reached by a simple path that runs along the lake, almost always flat. The environment is open, with meadows, small streams, and some alpine pasture buildings. The landscape is surrounded by high peaks and glacial environments, clearly visible in the background. The Rifugio Prarayer is located here, used as a base for longer excursions. The area is suitable for a quiet break after the walk along the lake. Itineraries to side valleys and high-altitude routes start from here. Despite the altitude, the setting remains accessible and not very demanding.
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The Place Moulin dam is a majestic arch-gravity dam, designed to make the most of the narrow and incised conformation of the valley. Its concrete structure develops with a slight curvature, which allows the water's thrust to be transferred to the lateral rock walls, reducing direct pressure on the base and ensuring high stability. With a height of approximately 155 meters and a crest length of over 600 meters, it represents one of the most imposing hydraulic works in the Italian Alps. The artificial basin formed upstream reaches a capacity of over 100 million cubic meters of water, mainly fed by the Buthier stream and glacial meltwater. The plant is an integral part of a hydroelectric system: the accumulated water is conveyed through penstocks to power plants located downstream, where the head is transformed into energy. The management of levels is regulated by surface and bottom outlets, designed to control both floods and ordinary releases.
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The Marmitta dei Giganti in Bionaz is a striking cavity carved into the rock that tells of the power of the alpine glaciers. It formed during the last ice age, when meltwaters, laden with sand and stones, channeled into powerful vortices: the debris, rotating ceaselessly, smoothed the rock to create this deep, almost perfectly shaped "pot". Alongside the scientific explanation, the charm of legend also survives: it is said that giants dug these cavities, using them as containers or leaving their superhuman strength imprinted on them. It is precisely this intertwining of nature and imagination that makes the place so fascinating.
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This path runs along the Buthier stream and connects Porossan-Le Neyve to Roisan.
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At this point, there's a covered rest area ideal for those pedaling these trails, complete with an e-bike charging station and a tire pump. From the rest area, you can enjoy a spectacular view of the valley floor, perfect for a relaxing break during your hike or bike ride.
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The Gorza mountain pasture and lake are an ideal destination for those seeking a scenic walk immersed in nature. The mountain pasture offers vast pastures and splendid views of the surrounding mountains, while the nearby alpine lake offers a quiet haven perfect for a relaxing break.
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ski area, even in summer it's a postcard
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You can also stay for just a few hours: the hour costs 50 cents (as of 2025).
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There are 5 dedicated no-traffic gravel bike trails around Oyace. These routes offer a mix of moderate and difficult terrain, providing an authentic mountain cycling experience through the stunning Valpelline valley.
The no-traffic gravel trails around Oyace are generally considered moderate to difficult, with no routes specifically rated as easy. The terrain often features challenging climbs and can include steep, off-camber, and loose sections. For a moderate option, consider the Giro dei Ru di Roisan, which covers about 16 km with around 270 meters of elevation gain.
You'll experience wild alpine landscapes, with white roads winding through forests and pastures. The routes offer breathtaking panoramic views of the Valpelline valley and the rocky peaks of the Morion chain, providing a serene natural setting for exploration.
Yes, several routes are designed as loops. For example, the Gravel Balcony Road – Matterhorn view in Gilliarey loop from Mongnod offers a challenging 26 km ride with significant elevation, providing stunning views. Another option is the Place Moulin Dam – Prarayer Hut loop from Oyace, a difficult 29 km route starting directly from Oyace.
Many routes offer access to significant landmarks and natural features. You can ride towards the impressive Place Moulin Dam, a large reservoir nearby. Other highlights in the broader area include the historic Arch of Augustus and various mountain huts like Cuney Refuge and Oratory, which can be reached via challenging trails.
The best time for gravel biking in Oyace is typically from late spring to early autumn (May to October), when the alpine trails are clear of snow and the weather is most favorable. During these months, you can fully enjoy the pure environment surrounded by wide woods and pastures.
For experienced riders seeking a longer challenge, the Porta Pretoria (Aosta) – Quart Castle loop from Nus is a difficult route spanning over 62 km with more than 1000 meters of elevation gain. This trail offers an extensive journey through varied terrain.
The komoot community highly rates the gravel biking experience in Oyace, with an average score of 4.95 out of 5 stars. Reviewers often praise the stunning alpine scenery, the tranquility of the traffic-free routes, and the challenging yet rewarding climbs that lead to incredible viewpoints.
Yes, the Gravel Balcony Road – Matterhorn view in Gilliarey loop from Mongnod is specifically designed to provide spectacular views of the Matterhorn, making it a highly scenic and memorable ride for those seeking iconic alpine vistas.
Parking is generally available in and around the village of Oyace, which serves as a common starting point for many routes. For routes starting from other nearby villages like Mongnod or Nus, local parking facilities can be found there, often near the trailheads or village centers.
Given that most trails are rated moderate to difficult with challenging climbs and varied terrain, they might not be suitable for all families, especially those with young children or beginners. However, families with experienced teenage riders or those comfortable with more demanding routes might enjoy the adventure and scenic beauty.


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