Start/finish on Megalou Alexandrou Ave at Gyzi St, after the "Umbrellas" sculpture. Out-and-back route south to Kalamaria (turn at Vryoulon St, 7.02 km), then along the waterfront to the city centre via Tsimiski, Polytechniou and 26is Oktovriou (turn at G. Andreou St, 17.73 km), returning via Nikis Ave and the White Tower. Open to runners born 2008 or earlier. Awards: top 3 men and women overall; age groups 36-50, 51-65 and 66+. Age-group awards (winners of the overall ranking excluded) are presented at a later event at the Olympic Museum. Registration center: Olympic Museum, 3is Septemvriou & Agiou Dimitriou, Thessaloniki (weekdays & Saturday 10:00-16:00, until 01/11); registration and cash payment also possible there. Race pack pickup place and time will be announced on olympicdayrun.gr. Cancellations: €3.50 fee, only for registrations and requests made by Friday 30/10/2026; no refunds for registrations from 31/10 onwards. Social-awareness group registration: runners add €4 which is donated to social responsibility organizations. Contact: +30 2310 968531, olympicdaygr@gmail.com.