UK Open Water Swimming Events

England’s longest swim — 11 miles end-to-end of Windermere. A bucket-list challenge for serious open water swimmers.

Three-day swim festival with Night Swim, main Wild Swim and a 10km end-to-end swim in the stunning Galloway countryside.

Open water swims from 250m to 10km plus a 750m swim/5k run aquathlon at one of the UK’s highest loch beaches in the Cairngorms.

New-for-2026 open water swim at Llyn Brenig reservoir in the Denbighshire hills with multiple distance options.

Swimming festival near Newcastle with multiple distances plus paddling activities, BBQ and community atmosphere.

Iconic annual open water swim in the Serpentine lake in Hyde Park, organised by London Marathon Events. Four distances available including a 1-mile race.

Challenge yourself at Swim Long – Eton Dorney on 20 September, an open water swimming event at the iconic Olympic venue near Windsor.

Dive into the beautiful waters off Dawlish Warren in Devon for this scenic open water swim. A wonderful late-season event set against one of the South West’s most picturesque coastlines.

County teams from across England compete at the iconic Ponds Forge in Sheffield for national honours in this prestigious pool swimming championship.

The Swim England Masters National Championships at Ponds Forge is the pinnacle event for masters swimmers, featuring fierce competition across all age groups.

Swim England South West Region winter short-course championships at Millfield, Street. Qualifying times required.

Swim England’s flagship short-course championships at Ponds Forge, Sheffield. The nation’s top swimmers compete over 25m in December.