ELIGIBILITY: 18+ years old. Requires completion in last 3 years (since Sept 1, 2023) of: (1) at least 2 trail races of 40km+ with +2100m elevation; OR (2) 1 ultra trail race of 60km+ with +3500m elevation. RACE FORMAT: 101.7km ultra-marathon trail run starting Friday Sept 11 at 23:00 from Ypati square (394m elevation). Time limit: 24 hours (finish by 23:00 Saturday). REGISTRATION: May 1 – Aug 31, 2026. Pricing: €80 (May 1-15), €100 (May 16-Aug 15), €120 (Aug 16-31). Individual registration only via https://trahina.gr/engrafes-out/. MANDATORY EQUIPMENT: (1) Sports backpack 8L+ capacity, (2) Mobile phone with emergency numbers, (3) Cup 150ml+ capacity, (4) Water bottles total 1L+, (5) Headlamp + 3 extra batteries, (6) Aluminum emergency blanket 1.4×2.0m minimum, (7) Food 800+ kcal minimum, (8) Windproof/waterproof jacket with hood, (9) Long-sleeve thermal shirt, (10) First aid kit, (11) Whistle. Equipment check at package pickup or during race. Optional: gloves, trekking poles, sunglasses, arm sleeves, GPS watch. NO single-use cups at stations. CUTOFF POINTS with MANDATORY TIMES: (1) Neohoroi 17.8km - 4h:20m from start / Saturday 03:20, (2) Pauliani 48km - 11h:15m from start / Saturday 10:15, (3) Kumarítsi 62km - 13h:50m from start / Saturday 12:50, (4) Livádiés 89km - 20h:00m from start / Saturday 19:00, (5) Ypati Finish 101.7km - 24h:00m from start / Saturday 23:00. Runners failing to reach checkpoints within cutoff times will be disqualified (DSQ). REFUEL STATIONS (9): Kapnochori (3km), Kastania (7km), Pathena (11km), Neohoroi (17.8km), Katavóthра (31km), Pauliani (48km, Drop Bags), Kumarítsi (62km), Agio Pnevma (73km), Livádiés (89km). SCHEDULE: Fri 5/1 00:01 registration opens. Fri 9/11 12:00-17:30 packet pickup. 13:30-14:30 pasta party. 23:00 race start. Sat 9/12 11:30 first finisher estimated. 20:30 awards ceremony. Sun 9/13 18:30 event ends. Support permitted only at Neohoroi, Pauliani, Kumarítsi. NO pacers allowed. Drop-bag at Pauliani. Awards: Medal for all finishers; Trophies for top 3 men/women general and age categories (M/W 18-39, M40/W40 40-49, M50+/W50+ 50+). Medical support with ambulance and doctor. Insurance included. Free accommodation at Ypati gymnasium (email: info@trahina.gr). Contact: Trahina Running Club (info@trahina.gr).