4.5
(73)
625
riders
36
rides
Gravel bike trails around San Gregorio Nelle Alpi are situated in the Valbelluna valley, at the foot of Monte Pizzocco within the Belluno Dolomites National Park. The region offers a network of dirt roads, secondary roads, and historic mule tracks, providing varied terrain for gravel cyclists. Riders encounter a mix of compact dirt and rugged sections, traversing alpine pastures, forests, and valleys. This area is characterized by its diverse surfaces and scenic routes away from heavy traffic.
Last updated: July 21, 2026
5.0
(2)
104
riders
91.6km
05:40
1,290m
1,290m
Hard gravel ride. Very good fitness required. Mostly paved surfaces. Suitable for all skill levels.
4.3
(22)
74
riders
37.4km
02:09
260m
260m
Moderate gravel ride. Good fitness required. Mostly paved surfaces. Suitable for all skill levels.

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4.4
(11)
92
riders
60.6km
03:49
610m
610m
Hard gravel ride. Very good fitness required. Mostly paved surfaces. Suitable for all skill levels.
4.7
(3)
37
riders
Hard gravel ride. Very good fitness required. Mostly paved surfaces. Suitable for all skill levels.
5.0
(1)
19
riders
45.5km
02:56
400m
400m
Moderate gravel ride. Good fitness required. Mostly paved surfaces. Suitable for all skill levels.
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The San Boldo Pass is an alpine pass located at an altitude of 706 meters that connects the province of Treviso (Val Mareno) with that of Belluno (Val Belluna) near Cison di Valmarino. This communication route is universally known as the "Road of 100 Days", a unique engineering masterpiece characterized by tight hairpin bends carved directly into the rock. The current road was completed in just one hundred days, between February 1st and June 1st, 1918, by the Austro-Hungarian army during World War I. It was used to quickly supply the front on the Piave River with weapons and ammunition. Over 7,000 workers were employed, including prisoners of war and the local population
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The summit of Passo San Boldo between the provinces of Treviso and Belluno.
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There is no second time. Built in 100 days.
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Beautiful lake for water sports.
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The San Boldo Pass, located between the provinces of Treviso and Belluno, is a road engineering masterpiece unique in the world. Known as the "Road of the Hundred Days", it was built in record time by the Austro-Hungarian army in 1918 for wartime needs. Its peculiarity lies in the final meters of ascent, where the roadway winds through five tunnels carved into the living rock, connected by very tight hairpin bends that seem to overlap vertically. Traffic in the tunnels is regulated by a single traffic light, as the road is so narrow that it only allows one vehicle at a time.
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Besides being a beautiful climb, it is a masterpiece of road engineering.
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Unique road/tunnel layout with traffic lights, meaning it can also be driven uphill safely as the sections are short
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There are over 50 gravel bike trails available in the San Gregorio Nelle Alpi area, catering to various skill levels from easy to difficult. The region is known for its extensive network of dirt roads, secondary roads, and historic mule tracks.
The terrain in the Valbelluna area is quite varied, offering a mix of compact dirt, forest roads, and more rugged sections. You'll traverse lush alpine pastures, forests, and valleys, with some routes featuring significant elevation changes. This diversity provides challenges for all levels of riders.
While many routes offer varied terrain, some sections might be more challenging. For a generally accessible experience, look for routes that follow river paths or flatter valley sections. The region has 3 easy-rated tours, which are often suitable for families or those seeking a more relaxed ride.
Absolutely. The Belluno Dolomites National Park, with Monte Pizzocco dominating the skyline, provides ample opportunities for challenging rides. Many of the 38 difficult-rated tours feature substantial climbs and descents, offering rewarding panoramic views over the Valbelluna area. An example of a longer, more challenging route is the Pope Luciani Square, Mel – Historic centre of Mel loop from Sedico - Bribano, which covers 40 miles with considerable elevation gain.
Many routes offer stunning views of the Dolomites. You can find trails leading to viewpoints overlooking the Valbelluna valley. For specific natural attractions, consider routes near the Cadin del Brent Waterfall or the Soffia Gorge and Waterfall. The Occhio (Eye Sculpture) – Lake Santa Croce loop from Santa Giustina-Cesio also offers diverse scenery including a lake.
Yes, the area is rich in history. Many gravel routes utilize historic mule tracks and former military roads. You can also find routes that pass by elegant Venetian villas like Villa Sandi or Villa Rudio, and significant churches such as the parish church of San Gregorio. The Pope Luciani Square, Mel – Historic centre of Mel loop from Sedico - Bribano specifically leads through historic areas.
The best time for gravel biking in the Belluno Dolomites is generally from spring through autumn. During these seasons, the weather is more stable, and the trails are typically clear of snow, offering pleasant temperatures and vibrant natural landscapes. Summer provides longer daylight hours, while spring and autumn offer cooler temperatures and beautiful foliage.
Parking is generally available in and around the main towns and villages in the Valbelluna area, including San Gregorio Nelle Alpi. Look for designated parking areas near trailheads or in town centers, which often serve as convenient starting points for rides. Specific parking information might be available on individual route descriptions.
Public transport options in the Belluno Dolomites region, including buses, may allow bikes, but it's essential to check specific schedules and regulations beforehand. Some regional bus services might have limited space for bicycles, especially during peak seasons. Planning your route to start near train stations or bus stops that accommodate bikes is advisable.
The gravel biking routes around San Gregorio Nelle Alpi are highly rated by the komoot community, with an average score of 4.6 stars from over 90 reviews. Riders often praise the diverse terrain, the stunning panoramic views of the Dolomites, and the peaceful nature of the trails, which are largely free from traffic.
Yes, for those looking for longer adventures, there are several extended gravel bike tours. For instance, the Occhio (Eye Sculpture) – Lake Santa Croce loop from Santa Giustina-Cesio is a challenging 65-mile (104 km) route that offers a full day of exploration through varied landscapes.
Yes, the Valbelluna area is characterized by its waterways. Routes like the Cordèvole Stream – Church of San Gottardo loop from Santa Giustina-Cesio and the Cordèvole Stream – Salce Cycle Path loop from Santa Giustina-Cesio follow the scenic Cordèvole Stream, offering pleasant rides along the water.
For additional context and information about cycling in the broader Belluno Dolomites region, you can visit the official tourism website: visitdolomitibellunesi.com. This resource can provide further insights into the area's cycling offerings.


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