7km mountain trail race on Mt Oiti with +428m elevation gain. Time limit: 2 hours (finish by 11:00). No cutoff points. Route starts and finishes at Ypati square (394m), climbing to Kapnochori then descending via the Xirias riverbed back to Ypati, passing through the medieval castle before the finish. 1 water station at Kapnochori (3km). Mandatory equipment: cup 150ml+ and emergency blanket 1.4×2.0m. No pacers allowed. No plastic cups at stations. Trekking poles permitted. Eligible: 18+ years old (16+ with guardian consent). No medical certificate required. Bib pickup: Saturday Sept 12, 14:00–20:00 and Sunday Sept 13, 07:00–08:45 at Rouska Foundation, Ypati square. Pasta party Saturday. Medal for all finishers within time limit. Top 3 overall awarded (no age categories). Free camping at school gymnasium. No refund for registration cancellation. Contact: info@trahina.gr.