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Gravel biking around Casarejos offers access to an extensive network of unpaved roads and trails within the Soria province of Spain. The region is characterized by the dramatic limestone gorge of the Cañón del Río Lobos Natural Park, surrounded by extensive juniper and black pine forests. Cyclists navigate diverse terrain, including unpaved dirt roads and loose stones, providing a sense of solitude due to the area's low population density. This landscape provides varied backdrops, from deep canyons to panoramic viewpoints over the pine forests.
Last updated: July 11, 2026
6
riders
43.6km
02:38
270m
270m
Moderate gravel ride. Good fitness required. Mostly paved surfaces. Suitable for all skill levels.
1
riders
Moderate gravel ride. Good fitness required. Mostly paved surfaces. Suitable for all skill levels.

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2
riders
22.6km
01:44
290m
290m
Moderate gravel ride. Good fitness required. Mostly paved surfaces. Suitable for all skill levels.
3
riders
103km
08:04
1,730m
1,730m
Hard gravel ride. Very good fitness required. Mostly paved surfaces. Suitable for all skill levels.
2
riders
22.9km
01:51
300m
300m
Moderate gravel ride. Good fitness required. Mostly paved surfaces. Suitable for all skill levels.
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Popular around Casarejos
Mirador de las Gullurías .. Spectacular area for hiking routes
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Former train station on the Santander Mediterranean line
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The cycle path on the railway line consists of coarse, loose gravel, so the wide shoulder on the relatively quiet national road is really relaxing
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very beautiful castle complex with fine MTB and gravel paths all around
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San Leonardo de Yagüe Km 61. Altitude 1,060. The Greenways and Nature Trails networks restore old railway lines from the late 19th and early 20th centuries, when engineers marked the placement of rails following the terrain and elevations, avoiding steep slopes, something unthinkable in today's railway designs. The railway weaves through the mountain pine forests and passes far from Navaleno; even the old station is off the route, although it appears to be undergoing restoration. In San Leonardo de Yagüe, however, a cinematic curiosity of the railway remains visible. Before reaching the town, the rails that were the setting for a sequence in the film Doctor Zhivago appear, where Zhivago meets Strelnikov. This scene is set with photos from the film and the famous Mikado locomotive, an interesting location for classic film lovers. The town is a fine example of the region's pine architecture. It has stately homes, remains of a 16th-century castle, and the town square features a pine tree raised during the "pingada de mayo" (May Pingada), a popular festival held by local youths who select a large pine tree from the forest and hoist it (pingan) using wooden forks and ropes until the trunk is positioned vertically in the town square. The descent to Hontoria del Pinar is fast; the bike can reach 30 kilometers per hour without applying pressure on the pedals. It's a delightful stretch in the kingdom of the pine forest. The current development of the Nature Trail ends at the entrance to the town, near the Lobos River. It looks like the end of the road, but it's actually a break in the signage work to Cascajares del Campo. These will soon be completed, and the trail will continue to the Engaña Tunnel, in the Cantabrian Mountains. In Hontoria, I have prepared a connecting section to Duruelo de la Sierra to return to Soria along the Senda del Duero. The trail is fairly simple and obvious, following the forest trails of the pine forests. It climbs up the Palacios de la Sierra road and crosses the mountain range to pass by the Presón Refuge and the Castroverde Refuge, in case anyone prefers to spend the night in the pine forest. The climb to the Balcón de Pilatos has some rather steep slopes at the end of the stage through the Umbría mountain range. It's the last warm-up before a comforting descent along the Duruelo de la Sierra road.
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There are 5 dedicated no-traffic gravel bike routes around Casarejos featured in this guide. These routes offer a fantastic way to explore the region's natural beauty away from vehicular traffic.
The gravel trails around Casarejos, particularly within the Cañón del Río Lobos Natural Park, feature a diverse mix of unpaved dirt roads, loose stones, and occasional river crossings. You'll ride through extensive juniper and black pine forests, experiencing varied backdrops from deep canyons to panoramic viewpoints. This varied terrain ensures an engaging experience, often requiring intermediate technical skill in some sections.
While all routes offer a no-traffic experience, many of the trails around Casarejos are rated moderate due to varied terrain and some elevation changes. For families with some gravel biking experience, routes like the Gravel loop from San Leonardo de Yagüe (22.6 km) or the Stone Shelter – San Leonardo de Yagüe loop (22.9 km) offer manageable distances and beautiful scenery. Always check the route details for specific difficulty and elevation before heading out with children.
Many routes pass through or near stunning natural features. You can explore the dramatic limestone gorge of the Cañón del Río Lobos, visit the impressive Cueva Grande (Río Lobos Canyon), or enjoy views from the Gullurías Viewpoint. The Hontoria del Pinar – El Apretadero Spring loop, for instance, offers a chance to see the Bridge of the Seven Eyes.
Yes, for experienced gravel bikers seeking a significant challenge, the Molinos de Duero – Laguna Negra Ascent loop from Navaleno is a difficult route spanning over 103 km with substantial elevation gain. This route will test your endurance and technical skills while offering breathtaking landscapes.
The Soria region, including Casarejos, is ideal for gravel biking during spring and autumn. These seasons offer pleasant temperatures, vibrant natural colors, and generally stable weather conditions. Summers can be hot, especially in the middle of the day, while winters can bring cold temperatures and snow, particularly at higher elevations within the pine forests.
Yes, all the gravel bike routes listed in this guide are circular, meaning they start and end at the same point. This makes planning your ride and transportation much more convenient. Examples include the Ucero – Río Lobos loop from Valdelinares and the Hontoria del Pinar – El Apretadero Spring loop.
Casarejos is situated in the heart of the 'España Vaciada' (Empty Spain) region, one of Europe's least populated areas. This means you'll find kilometers of paths in the middle of nature without seeing a soul, offering an unparalleled sense of solitude and connection with the environment. The extensive network of unpaved roads through the Cañón del Río Lobos Natural Park and surrounding pine forests provides a truly immersive and peaceful gravel biking experience.
The Cañón del Río Lobos Natural Park is rich in biodiversity. While cycling, you might spot various bird species, including griffon vultures soaring overhead. Deer, wild boar, and other smaller mammals also inhabit the forests, though they are often more elusive. Maintaining a respectful distance and observing quietly will enhance your chances of a wildlife encounter.
Yes, several routes offer glimpses of historical and cultural landmarks. For example, the Ucero – Río Lobos loop provides views of the historic Ucero Castle. Additionally, the Hermitage of Saint Bartholomew is a notable religious building located within the canyon, accessible from various points.


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