All news16.04.2023Regulations & standardsWinter National Open Championship 20232023 Greek National Winter Open Championships.Below you can find the detailed competition notices for the following events:ShareCopy linkPreviousTeam participation and child developmentNextSwimming, safety, fun! Part 1Read also26.03.2023Swimming, safety, fun! Part 119.02.2023A commanding NOK presence at all winter championships06.02.202322nd in boys and 25th in juniors among 80 clubs