Loop route starting and finishing at Voutsaras village (32nd km of old Ioannina–Igoumenitsa national road). Terrain: soft dirt trails, ancient cobblestone paths with short sections on forest/farm roads. Mostly shaded. 7 aid stations with water, seasonal fruits, dried fruits, salty snacks, bars, cake and soft drinks. Cutoff gate at 28km (Ekklissiochori) at 3h45m. Time limit: 6 hours. Minimum age: 15 years (under 18 require parental declaration via gov.gr). Top 3 per age category receive trophies (requires min. 6 athletes per category). Bib/chip pickup from 08:30 on race day or Friday Apr 24 (17:00–20:00 volunteer meeting). Challenge option (40km + 22km back-to-back on Apr 25–26) available for €50. Red Cross Ioannina medical coverage. Camping area with toilets, showers and parking at start/finish (book: 6944 788 431). Accommodation in nearby traditional guesthouses. Contact: kalamasrivertrails@outlook.com | Nikolaou Nikolaos: 6944 788 431.