Welcome to the 2025 Leinster Open Sea Season!
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Registrations Open!
Online registration is open for the following:
  • 2025 Season Registration + LOS Race Bundle - €60 (U18 €30.00) for Season Registration + 6 LOS races | 17 May - Remembrance Swim | 28 June - LOS North Side | 26 Jul - LOS Best of 3 #1 | 17 Aug - LOS Best of 3 #2 | 24 Aug - LOS Best of 3 #3 | 13 Sep - Lough Lene Lough Lene 1/2KM Register
  • 2025 Season Registration - €25 (U18 €15.00) Register
Race Entries Open!
Online entry is open for the following races:
  • Clontarf - Killiney - Sun 15 Jun 2025 Enter
Recent Results
  • Clontarf - Killiney Provisional - Sun 15 Jun 2025 - Men | Ladies
  • The Siobhan McKenna Cup - Killiney Provisional - Sat 14 Jun 2025 - Men | Ladies
  • Next Race:
    • Swan Leisure - Killiney - Sat 21 Jun 2025 - Ladies: 10:00, Mens 11:00, Tide: 08:31, Sponsor / Host Club: Swan Leisure SC
    • Arthur Dunne - South Wall - Sun 22 Jun 2025 - Ladies: 10:30, Mens 11:30, Tide: 09:33, Sponsor / Host Club: Halfmoon SC
    Problems

    Technical issues with the site, problems logging in, payment issues, missing LOS numbers, etc can be sent to [email protected]

    Queries regarding results, positions, missing races etc can be sent to: [email protected]

    Queries regarding handicaps, general issues, queries etc can be sent to: [email protected]

    New or Existing Swimmers

    If you are a new or existing swimmer to Leinster Open Sea please follow the instructions on the login page to reset your account or to sign up for a new one.

    Log in/Sign up