The Hurly Burly

Join us for our new event: the Hurly Burly, an autumn 10k on the Mawddach at the edge of Snowdonia - with a run alongside, and a run-swim option

Castle to Castle Teifi Swim

The Teifi Castle to Castle is a free 10k OSS social swim with no safety cover. Places are awarded by ballot and it is held each year.

Image: Dart 2014 by Anna Barclay

Dart 10k

The OSS Dart10k is one of the finest 10k swims in the land. This is our eighth year and we look forward to welcoming swimmers for our fabulous shared journey from Totnes to Dittisham. Tickets are now sold out.

Fry Island Swim

Artist and swimmer Amy Sharrocks launches new swim and events and talks at Reading on Thames Festival.

December Dip & Winter Book Talk

Join us for the Outdoor Swimming Society's December Dip - full of fancy dress, relay races and freezing dips

The Bantham Swoosh

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

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.