The Bantham Swoosh

The Bantham Swoosh is a 6km swim in a shallow, sandy-bottomed estuary. It's exciting, invigorating, beautiful and fun. 6 July 2019

DART10K 2019

Like the London Marathon for swimming, our flagship event the Dart10k is having it's 10th anniversary on the 14/15 September 2019.


OSS Events 2019: come and join us for a celebration of swimming

Bwrlwm Bermo/Hurly Burly

28 September 2019: the fastest 10k you'll find: the Hurly Burly, an autumn 10k on the Mawddach in North Wales - with a run and a run-swim option.


Mountains, cold water, films and stories of adventure: join us at Kendal Mountain Festival 14 – 17 November 2019

UK Open Water Event Calendar

The OSS has teamed up with FINDARACE to bring you their comprehensive event finder to our site. Enter search terms in the box below to get started, or scroll through the full calendar.