This is the final event of the Gaelforce Great Swim Trilogy. Swim the River Shannon, Lough Derg and Killary Fjord to complete the trilogy and earn your exclusive Gaelforce Great Swim Trilogy exclusive finishers gift!
Sign up for all three before 16 May 2026 to qualify.
The trilogy is designed as a journey - from lake, to river, to sea. With events in late spring, mid-summer and autumn, you can build your distances and experience as you go. The perfect challenge for your swimming year.
