Sollube Climb and Bermeo Coast Loop

This route is classified as difficult, primarily due to the demanding Sollube Climb. The climb features an average gradient of 8.7% with sections reaching up to 16.9%, requiring good to very good fitness and appropriate climbing gears for touring cyclists. While coastal sections can vary, the combination makes for a challenging and rewarding experience.

The terrain is diverse. The Sollube Climb features challenging gradients on generally good road surfaces, though some parts near the summit can be rougher. The coastal sections around Bermeo, particularly within the Urdaibai Biosphere Reserve, are mostly well-paved, winding through charming villages and offering stunning views of the estuary.

The route offers numerous scenic points. You'll pass by Bakio Beach, experience the vibrant atmosphere of Bermeo Harbor, and enjoy panoramic views from the Matxitxako Lighthouse. A notable highlight is the View of San Juan de Gaztelugatxe, offering iconic vistas of the hermitage.

While the tour officially starts near Bakio, Bermeo is a popular and recommended starting point for the Sollube Climb due to lower traffic. You can typically find parking in Bermeo, especially near the harbor or in designated town parking areas, to begin your loop.

No, there are no specific permits or entrance fees required for cycling through the Urdaibai Biosphere Reserve. However, as it is a protected natural area, cyclists are expected to respect local regulations, stay on marked paths, and practice leave-no-trace principles to preserve its ecological richness.

Given its 'difficult' classification and the challenging gradients of the Sollube Climb, this specific loop is not recommended for beginners. It requires good to very good fitness and experience with significant elevation gains. Beginners might consider easier coastal routes around Bermeo before attempting this one.

The best time to cycle this route is generally during the spring (April-June) and autumn (September-October) months. During these periods, the weather is typically milder, and the landscapes are lush. Summer can also be pleasant, but be prepared for potentially warmer temperatures and more tourists, especially in coastal towns.

Yes, the route incorporates sections of several other official cycling paths. You will find yourself on parts of the Bizkaiko bira, the [CIMA BI05] Sollube * Bermeo, and the Uribe trails, among others, adding to the varied experience of the loop.

While the route itself is a public road and coastal path, it's primarily designed for touring bicycles. If you plan to bring a dog, it would need to be able to keep pace with a bicycle for a significant distance or be carried in a suitable bike trailer. Always ensure your dog is on a leash when not actively cycling and respect local regulations regarding pets in towns and protected areas.

Yes, especially in the towns and villages along the coast. Bermeo Harbor and other coastal settlements offer numerous cafes, restaurants, and shops where you can refuel and enjoy local Basque cuisine. It's always a good idea to carry some snacks and water, especially for the climb itself, as services might be sparse on the mountain sections.

For the most enjoyable ascent of Sollube, it's highly recommended to approach it from Bermeo. This particular side of the climb is known for having significantly lower traffic volumes compared to other approaches, allowing for a more peaceful and focused climbing experience.