For children aged 6–15. Swim start in the sea near the park (Π-shaped course). Transition zone at Epidavros stadium, finish at the main port. Age categories (boys/girls): 6-7, 8-9, 10-12, 13-15. No overall winner category. Awards at approximately 12:30. Race pack pickup at Cafe Aktis, Epidavros port: Fri 17:30–21:30, Sat 09:00–21:00, Sun 06:30–11:00. Required documents: TOE card + valid health card (or recognized federation card), or health card + TOE Day Pass (€10; under-15s exempt). Relay teams: health card per athlete + one TOE Day Pass (€10) per team (waived if one member holds a valid card). Guardian signature required for minors. Send to contact@why-n.gr up to 2 days before race. Pricing tiers: Early Bird (first 50 registrations or 2 weeks from opening), Running Late (next 100 or 6 weeks from opening), Never 2 Late (available spots until 3 weeks before race), Last Minute (remaining registrations, including on-site). Contact: info@why-n.gr, 210-9830680.