Part of the 6th annual Chalkiopoulo cultural festival (Aug 14-18, 2026). Start/finish at the primary school courtyard in Nea Chalkiopoulo. Out-and-back course along the provincial road toward Loutra Chalkiopoulon, turning around at the 5km mark. Electronic chip timing. Water stations at 2.5km, 5km and 7.5km, plus water, juice and fruit at the finish. Awards: cups for the top 3 men and top 3 women; commemorative medals for all finishers. Awards ceremony after all races finish. Police (Embesos station) manage traffic, the Chalkiopoulo health center provides medical coverage, volunteers staff the aid stations, and a support vehicle follows the whole route. Participants run at their own risk and must self-certify their fitness. Runners must arrive at the school by 17:45 to collect their bib and sign a liability waiver (a parent/guardian must sign for minors). Contact: Evangelos K. Tsiounis, tel. 6977911144. Payment also accepted via bank transfer to National Bank of Greece account GR8401101550000015529620120 (beneficiary: Εκπολιτιστικός Σύλλογος Χαλκιοπουλιτών Αττικής Πειραιά Ο Άγιος Ανδρέας), quoting full name and distance (10 or 5 km) as the payment reference.