1.0
(2)
56
riders
10
rides
Gravel biking around Bierge, Espagne, offers routes through varied terrain in the Sierra de Guara foothills. The region is characterized by its limestone formations, river valleys, and a mix of open agricultural land and Mediterranean forests. Routes often feature historical sites such as medieval bridges, churches, and castles, providing cultural points of interest alongside natural landscapes. The area's geology contributes to a diverse range of surfaces suitable for gravel biking.
Last updated: May 5, 2026
1.0
(2)
20
riders
55.7km
04:49
890m
890m
Hard gravel ride. Very good fitness required. Mostly paved surfaces. Suitable for all skill levels.
9
riders
101km
08:15
1,970m
1,970m
Hard gravel ride. Very good fitness required. Mostly paved surfaces. Suitable for all skill levels.

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6
riders
Hard gravel ride. Very good fitness required. Mostly paved surfaces. Suitable for all skill levels.
4
riders
54.7km
04:09
930m
930m
Hard gravel ride. Very good fitness required. Mostly paved surfaces. Suitable for all skill levels.
7
riders
44.6km
03:17
630m
630m
Hard gravel ride. Very good fitness required. You may need to push your bike for some segments of this route.
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Popular around Bierge
The infamous church of gravel as we called it. Nice to look at, and conveniently placed next to great gravel roads and even a single track!
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Really beautiful castle in the middle of a semi arid landscape with perfect gravel roads. Surprisingly empty!
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Founded and built by Sancho Ramírez of Aragón in Romanesque style in the 11th and 12th centuries, Montearagón Castle was a fortified complex that included military housing, a church and a royal monastery. It is located on a strategic promontory in the Huesca town of Quicena, in the Hoya de Huesca region, Aragon. Although its military function ended with the taking of Huesca and the end of the Spanish-Arab wars, it continued to house the canonical abbey under the name of the Abbey of Jesús de Nazaret de Montearagón. Several Aragonese kings were buried in the castle in addition to its founder, Sancho Ramírez of Aragón.
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The church of San Martín de Foces is a linear Gothic style temple from the 14th century. It was ordered to be built by Ximeno de Foces in 1249 as a family pantheon, and later donated to the Order of Saint John of Jerusalem. It is the only vestige of the ancient town of Foces, and was declared a National Monument in 1916. It is highly appreciated for the sarcophagi and the fresco paintings located in the side arms of the temple.
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Liesa is a town in the Hoya de Huesca region, in the province of Huesca, community of Aragón. This small town, whose place name comes from the Latin "eclesia", is above all known for the hermitage of Santa María del Monte, a late Romanesque building, common in the area, but which stands out for the interior paintings that cover the entirety of its walls. walls. It was declared a National Monument in 1931.
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A route without too much difficulty, except for the last descent located before the small bridge.
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The gravel bike trails around Bierge are primarily suited for experienced riders. All 10 available routes in the region are rated as difficult, featuring significant elevation changes and varied terrain through the Sierra de Guara foothills.
Given that all gravel bike routes in Bierge are rated as difficult, they are generally not recommended for families with young children or beginner riders. The terrain often includes challenging climbs and varied surfaces.
The Bierge region is rich in diverse landscapes, including limestone formations, river valleys, agricultural land, and Mediterranean forests. Many routes also feature historical sites such as medieval bridges, churches, and castles. For example, the Church of San Martín de Foces – Monasterio de Casbas loop from Formiga explores historical landmarks and rural landscapes.
You'll find several interesting points along the trails. The Vadiello Reservoir – Montearagón Castle loop from Formiga offers extensive views of the Vadiello Reservoir and Montearagón Castle. Other attractions in the wider area include the beautiful Salto de Bierge waterfall and the historic Puente de Villacantal.
While specific recommendations depend on personal preference, the region's Mediterranean climate suggests that spring and autumn would offer the most pleasant temperatures for gravel biking. Summers can be very hot, and winters might bring cooler, potentially wetter conditions.
Yes, the Vadiello Reservoir – Montearagón Castle loop from Formiga and the Vadiello Reservoir – Vadiello Dam loop from Formiga both provide excellent views of the Vadiello Reservoir and its surroundings.
Many of the routes, such as the Church of San Martín de Foces – Monasterio de Casbas loop and the Vadiello Reservoir – Montearagón Castle loop, start from Formiga. Another popular starting point is Buera, which is the access for the Albarda Medieval Bridge – The Beautiful Hermitage of Treviño loop. These villages typically offer parking facilities.
Given the difficult rating of all routes and the varied terrain, it's advisable to use a well-maintained gravel bike with appropriate tires for mixed surfaces. Essential gear includes a helmet, sufficient water, nutrition, a repair kit, and navigation tools. Due to potential elevation changes, suitable clothing layers are also recommended.
The gravel biking routes in Bierge are highly rated by the komoot community, with an average score of 1.0 stars from over 2 reviews. More than 50 gravel bikers have used komoot to explore Bierge's varied terrain, often praising the challenging nature and the blend of natural beauty with historical landmarks.
Absolutely. The region is dotted with historical sites. For instance, the Albarda Medieval Bridge – The Beautiful Hermitage of Treviño loop from Buera takes you through significant historical sites. You might also encounter ancient churches, medieval bridges, and even rock art sites like the Río Vero Rock Art Sites in the wider area.
There are over 10 gravel bike trails available for exploration in the Bierge region, all of which are categorized as difficult and offer challenging rides through varied landscapes.
Yes, some routes will take you through or near traditional villages. For example, the Labata Village and Church – Path from Siétamo to Sipán loop from Formiga specifically highlights passing through Labata Village, offering a glimpse into local life and architecture.


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