Route through the peri-urban forest of Serres. Terrain: 85% trails, 5% asphalt, 10% dirt road. Time limit: 2 hours. Aid station at km 5. Trail shoes, comfortable clothing, and water recommended. Age requirement: 16+ (16–17 year olds require parental consent via gov). Awards for top 3 men and women overall and Junior category (under 18). BIB pickup: Saturday 30 January at Kronios Square, 10:00–14:00 (on-site registration also available). Race day pickup: Serres Valley, 08:00–10:30. Contact: support@kalikantzaros-trail.gr, tel. 6973207343.