UTMB Index: 50, ITRA Points: 3. Time limit: 12 hours. Elevation gain: 2,800+m with positive/negative elevation distributed throughout (first 5km: 379m gain/93m loss; final 5km: 16m gain/298m loss). Route composition: 2km asphalt, 10km dirt, 38km trail. Signage: Red ribbon (always on left), green markers on trees and ground, direction signs. Mandatory equipment: Trail shoes. Optional: hat, windbreaker, sunscreen. Start outside Polygyros near the courthouse at the ring road. Registration 06:00-08:30 at start area. Aid stations (7 total) at 5, 12.5, 17.5, 20.5, 30.5 (main station - CUTOFF 6 HOURS), 40.5, 45km with water, electrolytes, bananas, salty foods. Water fountains at 9.5, 22, 33.5, 37.5km. Route highlights: ~90% trail to 24km, then firebreaks and forest roads. Caution sections: 14.5-15.5km and 32.5-33km (steep downhill in firebreak). Last 2km shared with other races. Includes: mountain backpack, technical shirt, memorial medal. Showers available at football stadium. Post-race meal: pasta. Award ceremony 13:30 (top 3 men/women overall, top 1 men/women in age categories 18-44, 45-60, 60+; all finishers get medals). Group registration (10+ athletes, all 3 races combined): €5 discount per person. Blood donors get free entry to 21K and 10K races. Personal course record = free entry 6th Cholomon Trail 2027. Bank transfer: IBAN GR52 0172 2760 0052 7610 6322 370 (Πειραιώς), beneficiary: ΥΨΙΖΩΝΟΣ. Contact: 6944545538, www.ipsizonos.com, Facebook: Cholomon Trail.