UK Open Water Swimming Events

A 1.5km midsummer swim in the Thames at Henley — shorter distance option in the popular Henley Swim series.

Young open water swimmers compete for national age group titles at Rother Valley Country Park in July — the UK’s premier junior open water championship.

The UK’s premier age-group open water swimming championships, held at Rother Valley Country Park. Young swimmers compete for national titles in a stunning outdoor setting.

The UK’s premier open water masters swimming championship returns to Rother Valley Country Park in July — a must-enter for competitive masters swimmers.

Swim England National Masters Open Water Championships at Rother Valley, Sheffield. Masters swimmers (25+) race in open water.

Top swimmers converge on Ponds Forge for the National Summer Meet (50m) from 27 July — competitive long-course racing at one of the UK’s premier aquatic venues.

Swim for a great cause in the beautiful Cotswolds countryside near Lechlade in this charity open water event. A wonderful way to combine a love of outdoor swimming with fundraising on a summer’s day.

Two-day wild swimming challenge visiting 10 lochs across the Trossachs National Park — a bucket-list adventure for open water swimmers.

Long-distance Thames swim with 5.5km, 9km and 13km options along the Marlow/Henley stretch. One of the UK’s premier river swims.

Grand finale of the EPIC Lakes Swim Series. Swim in Windermere at Borrans Park. 750m, 1500m, 3000m or 5000m distances.

Open water swim and aquathlon in Dartford, Kent. Swim in the lakes with run options — perfect for both swimmers and multi-sport athletes.

A relaxed-pace 2.3km swim around St Michael’s Mount for swimmers who want to enjoy the experience at a comfortable speed.

Open water swim on Loch Tay with distances from 250m to 10km at scenic Taymouth Marina.

Open water swim festival with Full Moon (10K), Half Moon (5K) and shorter distances plus a Midland Masters category.

A 3km open water swim in the beautiful waters of St Ives, Cornwall. Timed to avoid peak traffic with a morning start.

Open water swim at Loch Lomond with distances from 250m to 10km at Balloch.

Dive into Round 3 of the Box End Mass Start Swim at Box End Park, Bedford — a popular open water swimming series set in one of the UK’s best inland swim venues. Perfect for swimmers looking to test their endurance in a friendly, competitive atmosphere.

Dive into the stunning waters of Wimbleball Lake in Somerset for this late-August open water swim, set in a beautiful Exmoor National Park reservoir.

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.