The Bantham Swoosh

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

Dart 10k

Sold out. The OSS Dart10k is in our ninth year and we look forward to welcoming swimmers for our fabulous shared journey from Totnes to Dittisham on 15/16th September 2018.

The Hurly Burly

29th September 2018: 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 15 – 18 November 2018

Castle to Castle Teifi Swim

An idyllic swim through clear river water and the salty estuary of the River Teifi.

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.