Held at the Serres International Circuit, the largest and most modern motorsport circuit in the Balkans: a flat, completely level lap of 3047m on special soft asphalt with 7 left turns and 9 right turns, certified by an official World Athletics & AIMS measurer. Minimum age 18. Electronic chip timing, chip issued with bib at pickup. Registration opens August 1, 2025, online only. Bib/kit pickup: Thu Mar 19 & Fri Mar 20, 17:00-21:00, at Plateia Kroniou (in front of the Serres Chamber of Commerce); Sat Mar 21, 07:00-08:00, at the circuit secretariat. Technical briefing/welcome ceremony: Friday March 20, 18:30, Serres Chamber of Commerce, "Georgios Christidis" hall. General aid-station rules apply; athletes must carry their own water bottle/reservoir. A camping area is available on the circuit grounds over the event weekend for anyone wanting to stay overnight, with hot water showers and toilets. Awards ceremony Saturday March 21, 17:00: cups for the top 3 men and top 3 women overall, commemorative medal for anyone covering 30km or more. No age categories. Entry fee includes bib, timing chip, medal, aid-station food/drink and event T-shirt. Strict no-littering rule (waste only in designated bags at aid stations; penalty is disqualification); athletes must obey race judges. Protests must be filed in person by the athlete within 30 minutes of their own finish, decided by the race jury before the awards ceremony; the decision is final and binding. Organizers may briefly delay the start in case of dangerous weather. Participants race entirely at their own risk and self-certify fitness via a liability waiver signed at bib pickup. Cancel by Feb 15, 2026 for a 50% refund within 10 business days; no refund or transfer after that date; switching to a cheaper race does not entitle you to a refund of the difference; transfer to next year's edition allowed only if requested by Feb 15, 2026. Official results published a few days after the event pending verification. Info: support@serrescircuitrun.gr, +30 6973440049.