ELIGIBILITY: Participants must have completed at least one marathon or ultra-distance race in the last 3 years and be at least 18 years old. Medical certificate required (valid 6+ months). RACE INFO: Circular asphalt route around Parnon mountain through pristine nature with views of forests, plains, and briefly the Argolic Gulf. Mostly shaded. CUTOFF TIMES (mandatory): 18.7km by 12:45 (2h 45m), 45.5km by 18:00 (8h), 59.5km by 19:15 (9h 15m), finish by 20:30 (10h 30m). REFUELING: 17 aid stations with water, electrolytes, Coca-Cola, bananas, nuts, snacks, pasta. Drop bags from station 4 onwards. BIB PICKUP: Friday 19:00-21:00 or Saturday 07:30-09:30 at Central Square. RULES: No riding in vehicles (disqualification). Run on left side of road. No doping or electronic aids. Medical coverage at 2-3 locations. AWARDS: Medal for all finishers. Cups for top 6 men/women. 1st place winners' names engraved on memorial. BUS SERVICE: Departs Athens (Metaxourgeio, Stanley Hotel) at 05:30 AM, returns ~22:30-23:00. CONTACT: Athletic Awards Olympus, Leoforos Alexandrou Papaanastasiou 124, Kastella, Piraeus, 08:00-16:00 weekdays.