Arrankudiaga-Zollo Trail Lasterketa

Arrankudiaga-Zollo Trail Lasterketa will celebrate its 13th edition on 24 October 2026 in Arrankudiaga-Zollo, Bizkaia. The organisers present the day as a mountain trail event with a start in the municipality and two adult options: Mendi Maratoi Erdia and Trail Herrikoia. The official programme also announces children’s races, which are not included among the formats in this listing. The Mendi Maratoi Erdia format is listed with a distance of 21 kilometres, while Trail Herrikoia is announced over 8 kilometres. Both races will take place on the same Saturday and form part of a local event that combines the mountain route with activities aimed at different ages. No regulations for the 2026 edition have been found that confirm elevation gain, GPX tracks or sections, or entry prices.