• 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

• 95th Island Race - Ireland's Eye, Howth - Sat 19 Jul 2025 Enter
• LOS in partnership with Swan Leisure - Dublin Dockland inner City Charity Swim - Awards in new Liffey Water Sports Facility - Thu 03 Jul 2025 Enter

• LOS in partnership with Swan Leisure - Dublin Dockland inner City Charity Swim - Awards in new Liffey Water Sports Facility - Thu 03 Jul 2025 - Ladies: 19:00, Mens 19:00, Tide: 19:00, Sponsor / Host Club: LOS CLG + Swan Leisure SC
• North Side 3.8KM or 1.9KM ( Start High Rock - Finish Low Rock) - Sat 05 Jul 2025 - Ladies: 09:30, Mens 09:30, Tide: 09:00, Sponsor / Host Club: Leinster Open Sea

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]

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.