Úzquiza and Arlanzón Reservoirs - Sierra de Mancilla Loop

This is classified as a 'difficult' road cycling route, requiring very good fitness. It covers approximately 110 kilometers with a significant elevation gain of around 1,300 meters, typically taking over five hours to complete.

The route primarily features well-paved road surfaces, making it suitable for racebikes. However, the mountainous backdrop of the Sierra de Mancilla means you will encounter varied gradients and climbs throughout the circuit. While this specific route is paved, some related paths in the area around the Arlanzón Reservoir might include unpaved segments, so stick to the marked route for a pure road cycling experience.

You can expect incredible and majestic views, with the mountains forming a dramatic backdrop to the reservoirs. Key highlights include the Úzquiza Reservoir and the Arlanzón Reservoir, whose waters often reflect the clouds, creating striking visual elements. The route also passes through the Sierra de la Demanda, offering a blend of water bodies, forests, and mountains.

Given the mountainous terrain and potential for varied weather, spring and autumn generally offer the most pleasant conditions for cycling, with milder temperatures and beautiful scenery. Summer can be hot, especially during midday, while winter may bring colder temperatures and a higher chance of adverse weather in the mountains.

Specific parking areas are not detailed in the route information, but generally, for circular routes like this, you can look for parking in nearby settlements such as Riocavado de la Sierra or other villages around the reservoirs. It's advisable to check local regulations and available spaces upon arrival.

This route traverses the Espacio Natural de la Sierra de la Demanda. While there are typically no specific permits required for cycling on public roads within natural parks, it's always good practice to respect local signage, stay on designated paths, and be aware of any specific regulations regarding protected areas. There are no entrance fees for the natural area itself.

As a road cycling route, it is generally permissible to cycle with dogs, provided they are safely secured (e.g., in a trailer or basket) and do not interfere with other road users. However, if you plan to stop and walk with your dog in any natural areas along the route, always keep them on a leash and adhere to local regulations regarding pets in protected environments.

Yes, sections of this route overlap with other official paths. Notably, it covers portions of the Ruta del Sureste (17%) and the Vía Verde de la Sierra de la Demanda (12%). It also briefly intersects with the Etapa 12 Barbadillo de Herreros - Pineda de la Sierra (10%) and the Camiño Francés (Rutas alternativas) (4%).

The route passes through or near settlements like Riocavado de la Sierra, where you might find basic services, cafes, or restaurants. However, given the remote nature of much of the Sierra de Mancilla, it's recommended to carry sufficient water and snacks, especially for a ride of this duration and difficulty. Plan your stops in advance.

Due to its 'difficult' classification, significant distance (110 km), and considerable elevation gain (1,300 m), this specific circular route is not recommended for family cycling with children or beginners. It requires very good fitness and experience with long-distance road cycling. Families looking for cycling in the area might consider shorter, flatter sections of the Vía Verde de la Sierra de la Demanda, which are more suitable for a relaxed pace.

For this challenging route, essential items include a well-maintained racebike, appropriate cycling attire, helmet, sufficient water and nutrition, a repair kit (spare tube, pump, tools), navigation device (like komoot with the downloaded tour), sun protection, and layers of clothing to adapt to changing mountain weather. Given the remote sections, a fully charged phone and emergency contact information are also advisable.