The Gorobel Ibilaldia begins at Juan de Urrutia Plaza in Amurrio, Álava, offering three mountain routes into the Gorobel sierra: 40 km, 27 km, and 10 km. The longest route gains over 1,900 m, the middle route over 1,450 m, and the shortest route over 420 m, ensuring even the 10 km is a substantial climb. Starts are staggered throughout the morning, beginning with the 40 km and concluding with the 10 km. The event combines trail running with traditional mountain marching, accommodating both competitive racers and those who prefer a brisk pace without a focus on time.
Mendiko Lagunak organizes the event with the stated aim of introducing more people to the area and fostering respect for its natural and cultural heritage. The routes traverse less common paths into the sierra, passing landmarks like Mount Babio, adjacent villages, and ancient beech woods. As part of the Euskal Mendizale Federazioa long-distance march circuit, it attracts participants from federated mountain clubs alongside local runners. One participant's description captures the day: an early train to Amurrio, collecting race numbers in the plaza, followed by a brisk walk that transitions to running on the initial steep ascents.