Swimming events calendar

Swimming events calendar

Dive in to swimming events - from small charity swims to the biggest mass participation events in the world.

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UK swimming events

Wild swimming is booming in popularity as people search for a more immersive experience in the outdoors, both as a fun activity and an antidote to the stresses of modern life. The events listed here are hosted in rivers, lakes, outdoor pools and the great expanse of the ocean, meaning there's something for everyone, no matter whether you're an experienced seadog or are dipping a toe in for the first time.

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Choose your water

Sea, lake or river - or do it for charity.

Sea swims

Sea swims

Discover swimming events all around the coasts of the UK!

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Lake swims

Lake swims

Sign up to a swimming event in your local lake or find a major charity swim.

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River swims

River swims

The UK is built from a rich network of rivers - explore them here!

Find a swim
Charity swims

Charity swims

Swim and raise money for a good cause at the same time.

Find a swim

Swimming events in 2024

Featured events are listed below - select your region to see all events.

Race through the beautiful grounds and surrounding area of stunning Leicestershire on an event of your choice from starter to elite then celebrate with friends and family in the festival village.
  • Sat 27 - Sun 28 Jul
  • £28-£295
Grantham, Leicestershire, UK

Belvoir Castle Triathlon and Multisport Festival

Race through the beautiful grounds and surrounding area of stunning Leicestershire on an event of your choice from starter to elite then celebrate with friends and family in the festival village.

  • Kids triathlon 4
  • Novice triathlon
  • Super sprint triathlon
  • Sprint triathlon 2
  • Olympic triathlon
  • + 14 more races
A family-friendly trail running festival for all ages and abilities with Devon's best trail routes at its heart - plus sea swims, swimruns, guided runs, yoga, music, speakers, local food and camping!
  • Fri 30 Aug - Sun 1 Sep
  • £20-£55
Kingsbridge, Devon, UK

Something Wild Festival

A family-friendly trail running festival for all ages and abilities with Devon's best trail routes at its heart - plus sea swims, swimruns, guided runs, yoga, music, speakers, local food and camping!

  • Trail run
  • 5K run
  • 10K run
  • Sea swim
  • Sprint swimrun
  • + 5 more races
Get ready for the first edition of Long Course Weekend Yorkshire! A huge multi-sport festival in stunning Nidderdale featuring runs, rides, triple-style challenges and junior events too.
  • Fri 6 - Sun 8 Sep
  • £10-£349
Masham, North Yorkshire, UK

Long Course Weekend Yorkshire

Get ready for the first edition of Long Course Weekend Yorkshire! A huge multi-sport festival in stunning Nidderdale featuring runs, rides, triple-style challenges and junior events too.

  • Ironman
  • Half Ironman
  • Kids triathlon
  • Lake swim 2
  • Long sportive
  • + 6 more races
A one-day open water swimming event in the beautiful Serpentine Lake in Hyde Park, central London, with a choice of distances to suit all abilities. Charity places now available for 2024.
  • Sat 14 Sep
  • £10-£25
London, UK

Swim Serpentine

A one-day open water swimming event in the beautiful Serpentine Lake in Hyde Park, central London, with a choice of distances to suit all abilities. Charity places now available for 2024.

  • Lake swim 4
Triathlons at Dawlish Warren, a safe and supported environment for sea swimming, with a range of triathlon distances to offer a great challenge in a scenic location.
  • Sun 22 Sep
  • £42-£61
Dawlish, Devon, UK

Dawlish Triathlon

Triathlons at Dawlish Warren, a safe and supported environment for sea swimming, with a range of triathlon distances to offer a great challenge in a scenic location.

  • Super sprint triathlon
  • Sprint triathlon
  • Sprint aquathlon
Dawlish Warren is a fantastic location for a sea swim, regardless of experience level, plus the excellent Teignmouth Surf Life Saving Club team will be on hand to keep everyone safe.
  • Sun 22 Sep
  • £29-£49
Dawlish, Devon, UK

Dawlish Swim

Dawlish Warren is a fantastic location for a sea swim, regardless of experience level, plus the excellent Teignmouth Surf Life Saving Club team will be on hand to keep everyone safe.

  • Sea swim 3
Taking place across the scenic Thames Valley area with routes going through Culden Faw Estate. Swim the river, cycle the hilly open roads, run through the trail paths enjoying great views.
  • Sun 22 Sep
  • £25-£110
Marlow, Buckinghamshire, UK

The One on the River | Henley

Taking place across the scenic Thames Valley area with routes going through Culden Faw Estate. Swim the river, cycle the hilly open roads, run through the trail paths enjoying great views.

  • Sprint triathlon
  • Olympic triathlon
  • Half Ironman
  • Sprint aquabike
  • Standard aquabike
  • + 4 more races
Race through the beautiful grounds and surrounding area of Hever Castle on an event of your choice from starter to elite then celebrate with friends and family in the festival village.
  • Sat 28 - Sun 29 Sep
  • £28-£295
Edenbridge, Kent, UK

Hever Castle Triathlon and Multisport Festival

Race through the beautiful grounds and surrounding area of Hever Castle on an event of your choice from starter to elite then celebrate with friends and family in the festival village.

  • Half Ironman
  • Olympic triathlon
  • Sprint triathlon 2
  • Super sprint triathlon
  • Novice triathlon
  • + 16 more races
The UK's Number 1 Mountain Festival! Sport, Speakers, Live Music, Activities, Good Times. A full multi-sport and entertainment festival with exciting new changes!
  • Fri 16 - Sun 18 May 2025
  • £30
Keswick, Cumbria, UK

Keswick Mountain Festival

The UK's Number 1 Mountain Festival! Sport, Speakers, Live Music, Activities, Good Times. A full multi-sport and entertainment festival with exciting new changes!

  • 5K run
  • 10K run
  • Half marathon
  • 50K ultra run
  • Fell run
  • + 12 more races
Triathlon and swim events at Roadford Lake, offering a range of distances to suit all ability levels in a safe environment, with camping options to enjoy the area after your event.
  • Sun 18 May 2025
  • £58-£135
Lifton, Devon, UK

Roadford Lake Triathlon

Triathlon and swim events at Roadford Lake, offering a range of distances to suit all ability levels in a safe environment, with camping options to enjoy the area after your event.

  • Sprint triathlon
  • Olympic triathlon
  • Half Ironman
Take the opportunity to swim in a superb lake swimming venue where you’re not normally allowed to swim! Come and make a weekend of it with lakeside camping too.
  • Sun 18 May 2025
  • £29-£55
Lifton, Devon, UK

Roadford Lake Swim

Take the opportunity to swim in a superb lake swimming venue where you’re not normally allowed to swim! Come and make a weekend of it with lakeside camping too.

  • Lake swim 4
A much-loved favourite in the outdoors calendar, the Dartmouth Open Water Swims offer a choice of distances in the clear waters of Blackpool Sands Beach for a wide range of swimming abilities.
  • Sat 7 Jun 2025
  • £30-£47
Dartmouth, Devon, UK

Dartmouth Open Water Swim

A much-loved favourite in the outdoors calendar, the Dartmouth Open Water Swims offer a choice of distances in the clear waters of Blackpool Sands Beach for a wide range of swimming abilities.

  • Sea swim 3
Previously known as Mount Edgcumbe Triathlon, triathletes and swimmers of all abilities can experience a truly exceptional venue, finishers medal, t-shirt and memorable day out at a fantastic event.
  • Sun 15 Jun 2025
  • £25-£99
Torpoint, Cornwall, UK

Plymouth Triathlon & Plymouth Swim

Previously known as Mount Edgcumbe Triathlon, triathletes and swimmers of all abilities can experience a truly exceptional venue, finishers medal, t-shirt and memorable day out at a fantastic event.

  • Kids triathlon 3
  • Sprint triathlon
  • Olympic triathlon
  • Half Ironman
  • Sea swim 3
Join hundreds of other swimmers and take on an epic 1.4 mile open water swim from Boscombe Pier to Bournemouth Pier. With every stroke, you’ll be powering lifesaving research.
  • Sat 5 Jul 2025
  • £50
Bournemouth, Dorset, UK

Bournemouth Pier to Pier Swim

Join hundreds of other swimmers and take on an epic 1.4 mile open water swim from Boscombe Pier to Bournemouth Pier. With every stroke, you’ll be powering lifesaving research.

  • 1.4 miles sea swimming

Swimming event guides

Guides to swims and related activities.

3 reasons to start open water swimming
  • 10 mins read
  • 24 Jan 2023

3 reasons to start open water swimming

From cold water therapy to time spent in the great outdoors, open water swimming is your express ticket to feeling happier and healthier this year.

Swim runs

Swim runs

Swim in your running shoes and run in your wetsuit. Then repeat.

Swim run
Triathlons

Triathlons

Swim-bike-run events of all distances plus novice and kids events.

Tri it out
Aquathlons

Aquathlons

Run-swim-run in this dynamic multi-sport!

Find events
Aquabikes

Aquabikes

Triathlon without the run events.

Tri with no run

Swimming events near me

Select your location for swims in your local area.