Part of the 11th Sougliani Trail festival (running since 2015, 400+ athletes annually across all distances), on the Stratoniko Oros mountain range around Stavros and Ano Stavros - roughly 80-100km from Thessaloniki, Serres, Drama, Kavala and Kilkis. About 9km of the 13km course (75%) is single-track through the same protected old-growth forest as the longer routes, starting and finishing at the pedestrian street in Stavros; it is registered with ITRA, though it sits below the distance threshold for ITRA ranking points. Open to athletes 13 and over; younger participants may take part only with a parental consent form signed by both guardians, with signatures certified as genuine by the police, a KEP citizens' service centre or a port authority. Entry by card, Masterpass or bank transfer to the club's Alpha Bank account (IBAN GR2101405850585002002007302) - bank transfers must be completed within 48 hours or the registration is voided, with proof emailed to f.o.s.stavrou@hotmail.gr. Athletes previously disqualified elsewhere for serious ethical violations may be refused entry, and the distance only runs if at least 60% of its planned capacity is filled. Cancellations get a full refund if requested by 28 February 2027 by email from the registered address. An optional, unaided course-familiarization run on this route (together with the Sougliani Trail 25km) is held 7 February 2027, meeting at 09:45. Co-organized with the Municipality of Volvi. Info: Yiannis Agkotakis (Technical Director), tel. 6983054323.