4.0
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24
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Gravel biking around Casarejos, located in the province of Soria, Spain, offers diverse terrain for outdoor enthusiasts. The region is characterized by extensive pine forests, varied landscapes, and proximity to the Cañón del Río Lobos Natural Park. Riders can expect a mix of unpaved roads, forest tracks, and rolling hills, providing a blend of road cycling and mountain biking experiences. This area presents a promising destination for gravel exploration, with routes traversing natural features and offering varied elevation gains.
Last updated: July 2, 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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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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The Casarejos area, including the nearby Cañón del Río Lobos Natural Park, offers a diverse mix of terrain perfect for gravel biking. You'll encounter extensive pine forests with unpaved forest tracks, dirt roads, and paths through rolling hills. The region's limestone geology can also present rugged, uneven sections, providing a challenging and varied experience for riders.
Yes, several routes are designed as loops. For a moderate ride, consider the Mirador de Las Golleras – Ucero Castle loop from Valdelinares, which covers over 43 km. Another option is the Gravel loop from San Leonardo de Yagüe, a shorter, moderate 22 km ride.
The region is rich in natural beauty. You can explore the dramatic geological formations of the Cañón del Río Lobos, including the Cueva Grande (Río Lobos Canyon). Further afield, the mysterious Laguna Negra is accessible via a challenging route, offering stunning high-mountain lake views surrounded by pine trees and cliffs.
While many routes in the area are moderate to difficult, some shorter, less technical sections can be suitable for families with older children or those comfortable with varied terrain. The Stone Shelter – San Leonardo de Yagüe loop, at just under 23 km with moderate difficulty, could be a good option for families looking for a manageable adventure.
The spring and autumn months generally offer the most pleasant conditions for gravel biking in Casarejos, with milder temperatures and beautiful natural scenery. Summers can be warm, especially in the middle of the day, while winters may bring colder temperatures and potential snow, particularly at higher elevations or within the pine forests.
Yes, the varied topography of the region provides several opportunities for scenic views. The Gullurías Viewpoint is a notable spot offering expansive vistas. Additionally, routes like the Mirador de Las Golleras – Ucero Castle loop are named for their panoramic outlooks.
Parking is generally available near trailheads and in nearby towns like San Leonardo de Yagüe or Valdelinares, which serve as starting points for many routes. For example, the Hontoria del Pinar – El Apretadero Spring loop starts from the Parque Natural del Cañón del Río Lobos, where designated parking areas are typically found.
While many natural areas in Spain permit dogs, especially on trails, it's crucial to check specific regulations for protected areas like the Cañón del Río Lobos Natural Park. Dogs are generally expected to be kept on a leash to protect wildlife and ensure the safety of other visitors. Always respect local signage and guidelines.
The gravel biking routes around Casarejos range from moderate to difficult. You'll find routes with significant elevation gains, such as the challenging Molinos de Duero – Laguna Negra Ascent loop, which features over 1700 meters of climbing. Even moderate routes often include varied terrain and some climbs, making them suitable for riders with some experience.
Generally, permits are not required for cycling on established trails and tracks within the Cañón del Río Lobos Natural Park. However, it's always advisable to check the official park regulations before your visit, especially if you plan to venture off marked paths or into particularly sensitive areas. Respecting the natural environment and staying on designated routes is essential.
The komoot community rates the Casarejos area highly, with an average score of 4.0 stars. Reviewers often praise the region's stunning natural landscapes, particularly the dramatic Cañón del Río Lobos, the extensive and quiet pine forests, and the sense of adventure offered by the varied gravel tracks. The opportunity to combine challenging rides with natural exploration is a key highlight.


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