3.9
(5)
48
riders
6
rides
Gravel biking around Agüero is characterized by its unique geological formations and varied terrain in the Aragonese pre-Pyrenees. The landscape features the prominent reddish rock formations of the Mallos de Agüero and Mallos de Riglos, alongside mountainous areas with an altitude of almost 700 meters. Thick forests, winding roads, and the scenic River Gállego contribute to diverse riding conditions. This combination of rocky outcrops, forested areas, and river valleys provides a dynamic setting for gravel cyclists.
Last updated: July 2, 2026
3.7
(3)
18
riders
36.8km
03:06
870m
860m
Hard gravel ride. Very good fitness required. Mostly paved surfaces. Suitable for all skill levels.
5.0
(1)
9
riders
96.8km
08:50
1,940m
1,940m
Hard gravel ride. Very good fitness required. Mostly paved surfaces. Suitable for all skill levels.

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7
riders
142km
11:32
2,760m
2,760m
Hard gravel ride. Very good fitness required. You may need to push your bike for some segments of this route.
3.0
(1)
4
riders
51.8km
04:43
950m
950m
Hard gravel ride. Very good fitness required. Mostly paved surfaces. Suitable for all skill levels.
4
riders
48.6km
03:33
850m
850m
Hard gravel ride. Very good fitness required. Mostly paved surfaces. Suitable for all skill levels.
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In 2021, Castillo de Loarre was named the most beautiful castle in Spain. It is a magnificent Romanesque castle, the oldest parts of which date back to the early 11th century. This makes it one of the oldest surviving castles in Spain.
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You must walk around the alleys of Agüero, and there is a magnificent view of the Mallos de Agüero.
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The Donjon has no fewer than 5 floors and can be admired in several films.
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The Castle of Loarre is a monastic fortress built from the year 1019. The castle is considered one of the most beautiful in Spain and has enjoyed heritage protection since 1906.
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The impressive remains are located approximately 250 metres north of the Marcuello castle.
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Narrow and natural gorge.
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The city is home to artistic treasures such as the Romanesque Church of El Salvador and the 12th-century Church of Santiago. The latter, located one kilometer from the city, has been declared a National Monument and is one of the most beautiful Romanesque temples in Aragon.
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The castle contains elements of Romanesque architecture and has Bien de Interés Cultural status, which indicates its importance to the Spanish architectural heritage.
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There are several challenging gravel bike routes around Agüero, with komoot offering 6 distinct tours. These routes are generally considered difficult, offering significant elevation gains and distances for experienced riders.
Gravel biking in Agüero is defined by the dramatic Mallos de Agüero and the nearby Peñas de Riglos, spectacular reddish rock formations that dominate the landscape. You'll also ride through thick forests, along winding mountain roads, and near the scenic River Gállego, all contributing to a diverse and engaging experience.
Yes, Agüero offers routes for those seeking a significant challenge. The "Mallos de Riglos – Peñas de Riglos loop from Agüero" is a particularly long and demanding option, covering over 140 km with more than 2700 meters of elevation gain. Another substantial ride is the "Mallos de Agüero – Pígalo Pools loop from Agüero", which spans nearly 100 km and features almost 2000 meters of climbing.
The routes around Agüero offer breathtaking panoramic views, especially of the iconic Mallos de Agüero and Mallos de Riglos. You can also expect vistas of the surrounding mountainous terrain, forested valleys, and the River Gállego. The "View of Mallos de Riglos – Mallos de Agüero loop from Agüero" is specifically designed to showcase these impressive rock formations.
Absolutely. The region is rich in history. You can explore routes that pass by or lead to historic sites such as Marcuello Castle and Biel Castle. The "Loarre Castle – Peñas de Riglos loop from Riglos" offers a chance to see the impressive Loarre Castle, a significant medieval fortress in the area.
The spring and autumn months generally offer the most pleasant conditions for gravel biking in Agüero, with milder temperatures and less extreme weather. Summers can be hot, while winters may bring colder temperatures and potentially snow at higher elevations, making some routes more challenging or inaccessible.
Yes, many of the gravel routes in Agüero are designed as loops, allowing you to start and finish in the same location. Examples include the "Loarre Castle – Peñas de Riglos loop from Riglos" and the "Mallos de Riglos – Peñas de Riglos loop from Agüero", providing convenient options for exploring the area.
The area is highly rated by the komoot community, with an average score of 3.9 stars. Reviewers often praise the spectacular scenery of the Mallos, the challenging and rewarding climbs, and the sense of adventure found on the diverse gravel paths through forests and mountains.
Yes, the region is dotted with excellent viewpoints. The Camino del Cielo - Panoramic View offers stunning vistas, and the Vulture Viewpoint (Mirador de los Buitres) provides an opportunity to observe local wildlife amidst the dramatic rock formations. Many routes naturally offer elevated perspectives of the Mallos and surrounding landscapes.
Beyond gravel biking, Agüero and its surroundings are a hub for outdoor enthusiasts. The Mallos are popular for climbing and abseiling. Hiking is also prominent, with options like the Al-Foraz cave and sections of the GR1 Historical trail. For water sports, the nearby River Gállego in Murillo de Gállego offers rafting and kayaking opportunities.
Yes, several routes are designed to highlight these unique geological formations. The "View of Mallos de Riglos – Mallos de Agüero loop from Agüero" offers excellent perspectives of both the Mallos de Riglos and the Mallos de Agüero, immersing you in the region's most iconic natural landmarks.


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