David Merriman

David Merriman is an Irish open water swimmer and support crew member who is a member of the Half Century Club.

Open Water Swimming Highlights

He completed a 5.3 km swim around Spike Island from Cobh, Ireland in 2008.
He completed the 26.4 km Sri Chinmoy Marathon Swim from Rapperswil to Zurich in Lake Zurich, Switzerland in 2018 in 10 hours 51 minutes 23 seconds, at the age of 52.
He received the 2023 Devil's Island Trophy awarded by the Sandycove Island Swimmers to the best local crew for a marathon swim.
He participated in the 2026 Cork Distance Week where he was named a Hero.

2025: Liam Maher and Riana Parsons for supporting Ruth Fuller 26.6 km from Cork to Fountainstown.
2024: Carol Cashell, Steve Foster, and Finbarr Hedderman for supporting Brian Foster 70 km on a two-way North Channel crossing.
2023: Mike O’Sullivan, Lisa Cummins, David Merriman, Donna Galvin, Joyce Roberts, Angus Thomas, and Chantelle Thomas for supporting Karen O’Sullivan around Cobh
2022: Tim MacNamara, Rob Bohane, and Steven Foster for supporting Brian Foster and Hayley Cullinane 10 km from Garylucas Beach to the Speckled Door around the Old Head.
2021: Alex Jeffers and Bronwyn Jeffers for supporting Colm Walsh 10 km in Galley Head.
2019: Marie Watson, Dave O’Mahony, and Sean Foley for supporting Darren Hennessey 26 km from Sheeps Head to Durrus.
2017: Eoin Lowry and Anne Sheehy for supporting Maeve Mulcahy 20 km from Fastnet to Baltimore.
2016: Ruth Deane and Gavin Murray for supporting Gordon Adair 23.5 km from Inch to Dingle.