The best traffic-free bike rides around Kortezubi

While Kortezubi is part of the expansive Urdaibai Biosphere Reserve, offering many paths, this guide specifically highlights two challenging no-traffic gravel bike routes. These routes are designed to immerse you in the region's natural beauty away from vehicular traffic.

The no-traffic gravel trails around Kortezubi are generally considered difficult, featuring significant elevation changes. You'll encounter a diverse landscape, from trails alongside the Oka River estuary to climbs through Cantabrian holm oak forests and higher elevations. The varied topography of the Urdaibai Biosphere Reserve ensures a challenging and rewarding experience.

The routes featured in this guide are rated as difficult due to their length and elevation gain, making them less suitable for young children or beginners. However, the Urdaibai Biosphere Reserve offers many quieter paths that might be explored for shorter, less strenuous family rides, though they may not be entirely traffic-free.

The region is rich in natural and cultural highlights. You could encounter the unique Oma Forest, an artistic creation with painted trees, or enjoy expansive Views over the Urdaibai marsh. The Artzubi Bridge is another notable point of interest along some routes.

Generally, dogs are welcome on trails within the Urdaibai Biosphere Reserve, provided they are kept under control, preferably on a leash, to protect local wildlife and ensure the safety of other trail users. Always clean up after your pet. Specific regulations might apply in certain protected areas or private lands, so it's always best to check local signage.

The Urdaibai Biosphere Reserve is beautiful year-round. To best enjoy the no-traffic routes, spring and autumn offer pleasant temperatures and lush scenery, often with fewer visitors than peak summer months. Winter can also be suitable, though some paths might be muddy after rain. Always check local weather conditions before heading out.

Yes, the routes highlighted in this guide are designed as loops, allowing you to start and finish at the same point. For example, the challenging Lekeitio Old Town and Basilica – Lekeitio loop from Lekeitio offers a substantial ride through varied landscapes.

Parking availability varies by trailhead. For routes like the Guernica Mural in Gernika – Artzubi Bridge loop from Gernika, you can typically find parking in or near the starting towns. For attractions like Santimamiñe Cave or Oma Forest, designated parking areas are usually available, which can serve as convenient access points for nearby trails.

Public transport options exist for reaching towns within the Urdaibai Biosphere Reserve, such as Gernika or Lekeitio, which are starting points for some routes. However, access to specific, more secluded trailheads might require a short ride from the nearest public transport stop. Check local bus schedules for the most up-to-date information.

While the trails themselves focus on secluded, no-traffic areas, you'll find cafes, pubs, and restaurants in the charming towns and villages surrounding Kortezubi and within the Urdaibai Biosphere Reserve. Towns like Gernika, Lekeitio, and Busturia, which serve as starting points for some routes, offer opportunities for refreshments and meals.

The diverse topography of the Urdaibai Biosphere Reserve offers numerous scenic vistas. You can enjoy stunning Views over the Urdaibai marsh, or ascend to points like Sollube Summit, which is part of the Paresi Hermitage – Sollube Summit loop from Busturia Itsasbegi, for panoramic views of the coastline and inland landscapes.