Start and finish at the Nymfaia Tourist Pavilion, in the peri-urban forest of Nymfaia near Komotini. Circular course: Nymfaia Tourist Pavilion - 1st Spring - Testing Grounds Base - St. George's Chapel - Pyramid 24 (Greek-Bulgarian border) - Pyramid 22 (Greek-Bulgarian border) - Dragatis Military Outpost - 784m "Lithari" - Potistra - Kanoni - 564m point - return to the Tourist Pavilion. Part of the ITRA race series, worth 2 ITRA points; runners who want their ITRA ranking credited should enter their name in Latin characters exactly as it appears in the ITRA lists. Entry requires having finished a trail half marathon within the last two years. Open to runners aged 18 and over; runners aged 16 and over may take part with a signed declaration from their guardian. Five aid stations with water, isotonic drinks, gels and fruit at 8.5, 17, 23, 30 and 35km. All runners must pass the last station (35km) within 7.5 hours of the start. Runners must carry their own flask or cup - the race follows a zero-waste policy and single-use plastic cups will be kept to a minimum at the stations. Dropping any litter on the course (gel wrappers, bar packaging etc.) carries a time penalty and/or disqualification. Provisions: participation gift, full aid station support, recovery food at the finish and a commemorative finisher's medal. Awards take place at the start/finish area after the races: cups for the top 3 men and top 3 women overall, plus age categories 18-34, 35-49 and 50+ (men/women). The top 3 overall are excluded from the age categories; an age category is awarded only if at least 3 athletes take part in it, otherwise it merges with the previous one. First aid by the Hellenic Red Cross, Komotini branch; runners are advised to carry an elastic bandage and a space blanket. Bag storage available at the start. Registration runs through rodopirunners.gr via the athletin.gr platform. Group registration is available for teams of more than 10 people, clubs and gyms at €10 per runner. NOTE: the start is reached from Komotini through the Nymfaia Forest (Alsos Nymfaias) and has nothing to do with the village of Nymfaia - follow the asphalt road climbing from Komotini up to Alsos Nymfaias.