Bilbao Green Ring: Arrastaleku and Arraiz Loop

The trail begins in Alonsotegi. While specific parking lots aren't detailed, starting in the town generally implies public parking options are available nearby. For public transport, you would also aim for Alonsotegi.

This is a moderate hike requiring good physical fitness and sure-footedness. The path can be uneven and steep in sections. Be aware that some parts, particularly from the Nocedal dam and between Zaramillo and Alonsotegi, have been reported to be overgrown with brambles, potentially making passage difficult.

The most pleasant seasons for hiking this route are spring and autumn. During these times, temperatures are agreeable, and the scenery is particularly beautiful. Bilbao's climate can be humid, so these seasons offer the best conditions.

No, there are no specific permits or entrance fees required to access the Bilbao Green Belt, which includes this section of the GR-228. It's designed as an accessible outdoor space for the public.

While the trail is generally accessible for dogs, it's always recommended to keep your dog on a leash, especially in areas where you might encounter wildlife or other hikers. Be mindful of the potentially overgrown sections mentioned, as these could be challenging for pets.

The route offers spectacular panoramic views of green valleys and surrounding peaks like Ganekogorta. You'll pass by the Erreztaleku Summit Viewpoint, which provides quiet observation points towards the city of Bilbao. You'll also reach the Summit of GR-228 to Monte Pagasarri, offering more expansive vistas.

Essential gear for this trail includes trekking poles for stability on uneven terrain, sufficient water and food, shoes with good grip, and a waterproof jacket due to the potentially humid climate.

Yes, this route is part of the larger GR-228, known as the Bilbao Green Belt. It also covers sections of other official trails such as Bilboko Inguruko Berdegunea: Zorrotza - Pozo de los Caballos sahiesbidea, Peñas Blancas, and Bilboko Inguruko Berdegunea.

Given its 'moderate' difficulty rating, requiring good physical fitness and sure-footedness, this trail might be challenging for absolute beginners. Hikers with some experience and a reasonable fitness level will find it more enjoyable.

As the trail starts in Alonsotegi, you can expect to find basic amenities like cafes or shops in the town before or after your hike. However, there are no facilities directly on the trail itself, so plan accordingly for water and snacks.

This section is notable for its proximity to Bilbao, offering an accessible escape into nature for city dwellers. It provides a unique blend of extensive natural landscapes with panoramic views of a major city, showcasing the contrast between the natural environment and the cityscape.