Organized by the small local mountain club Azpigorri Mendi Kluba, the Lurretza Skyrace began in 2024 with 160 participants. In this third edition, the number of registrations has increased to 385, reflecting the event's growing appeal and effective management.

The race covers 19.65 kilometers with a positive elevation gain of 1,500 meters, winding through ancient forests, historically rich slopes, and peaks that have witnessed generations of shepherds, miners, and charcoal burners. The route blends the natural landscape and history of Enkarterri, passing through a section of the Triano Mountains Protected Biotope and the trenches of the Iron Belt.

Starting from Güeñes, the race is characterized by a strong community atmosphere, with volunteers and runners greeting each other. The first major challenge of the course is Luxar, where the trail ascends steeply through oak and chestnut trees. Historically, Luxar was a crucial reference point for navigation in the fog, and reaching its summit evokes a sense of connection with the mountain's past.

Respect for the environment is a priority for the organizers. All signage consists of reusable fabric ribbons and flags to minimize waste. Furthermore, aid stations do not provide cups, requiring participants to bring their own. The number of runners is limited (100 for the walk, 200 for the short race, and 200 for the longer race) to reduce the environmental impact of excessive crowds on the mountain.

Eretza, the most emblematic peak of Enkartaciones, is the main highlight of the race. Historically, it was a strategic point offering views of the valleys of Güeñes, Galdames, Barakaldo, and parts of the coast. The ascent is challenging but rewarding, with sections equipped with ropes to assist in steeper areas. The descent from Eretza is fast and technical initially, with loose stones and sharp turns, but the final section allows runners to pick up speed and enjoy the approach to the finish line in Güeñes.