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 | (1) 17 May - Remembrance Swim | (2) 6 Jul - LOS Best of 3 #1 | (3) 9 Jul - LOS Best of 3 #2 | (4) 13 Jul - Roger Casement Cups | (5) 26 Jul - Bray Promenade | (6) 13 Aug - LOS Best of 3 #3 Register
  • 2025 Season Registration - €25 (U18 €15.00) Register
Race Entries Open!
Online entry is open for the following races:
  • 95th Island Race - Ireland's Eye, Howth - Sat 19 Jul 2025 Enter
  • Leinster Open Sea - Best of 3 No2 - Killiney - Wed 09 Jul 2025 Enter
  • Leinster Open Sea - Best of 3 No1 - Seapoint - Sun 06 Jul 2025 Enter
Recent Results
  • Leinster Open Sea - Best of 3 No1 - Seapoint Best Of - Sun 06 Jul 2025 - Mixed
  • LOS in partnership with Swan Leisure - Dublin Dockland inner City Charity Swim - Awards in new Liffey Water Sports Facility - Thu 03 Jul 2025 - Mixed
  • Next Race:
    • Leinster Open Sea - Best of 3 No2 - Killiney - Wed 09 Jul 2025 - Ladies: 19:30, Mens 19:30, Tide: 11:45, Sponsor / Host Club: LOS + Clubs
    • Boyne Swim Drogheda - <a href="https://www.eventbrite.ie/e/boyne-swim-in-association-with-aura-leisure-tickets-1407565388969" class="btn btn-sm btn-primary" target="_blank">Register here!</a> - <span class="badge rounded-pill text-bg-light">Organised by Drogheda Tri</span><span class="badge rounded-pill text-bg-light">Entries are via Eventbrite</span> - Sat 12 Jul 2025 - Ladies: 11:00, Mens 11:00, Tide: 13:24, Sponsor / Host Club: Drogheda Tri
    Problems

    Technical issues with the site, problems logging in, payment issues, missing LOS numbers, etc can be sent to stefanray@gmail.com

    Queries regarding results, positions, missing races etc can be sent to: los.results@gmail.com

    Queries regarding handicaps, general issues, queries etc can be sent to: los.swimming@gmail.com

    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