Swimathon

World's biggest annual pool-based fundraising swim, celebrating 40th anniversary. Over 450 pools across UK participate.

20^th March 2026 £20 entry

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Blenheim Palace Triathlon

One of Europe's most spectacular triathlons at UNESCO World Heritage Site Blenheim Palace. Swim takes place in the Great Lake.

6^th June 2026 7^th June 2026 From £65 entry

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IRONMAN 70.3 Bolton

First race of 2026 IRONMAN England season. Swim at Pennington Flash Nature Reserve, bike through scenic Greater Manchester, run through Bolton Town Centre.

7^th June 2026 £320 entry

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Great North Swim

The UK's biggest open water swimming event with over 10,000 participants annually. Takes place in Lake Windermere, a UNESCO World Heritage Site.

12^th June 2026 13^th June 2026 14^th June 2026 From £39 entry

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Chillswim Coniston End to End

5.25 mile end-to-end swim of stunning Coniston Water in the Lake District.

20^th June 2026 £49 entry

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Long Course Weekend Wales

Multi-day festival with 11,000+ athletes from 56 nations. Individual events across swimming, cycling, and running over 3 days at Tenby.

26^th June 2026 £349 entry

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Bournemouth Pier to Pier Swim

1.4 mile open water swim in the English Channel from Boscombe Pier to Bournemouth Pier.

27^th June 2026 £50 entry

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Rat Race Man vs Mountain

Iconic mountain challenge in Snowdonia featuring trail running, wild swimming, and scrambling.

4^th July 2026 £95 entry

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Dart 10K

UK's original marathon-distance outdoor swim, tide-assisted journey along the River Dart from Totnes to Greenway Estate.

4^th July 2026 £120 entry

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IRONMAN 70.3 Swansea

Scenic coastal race along Wales' southern coast. Swim in Prince of Wales Dock, bike along Swansea Bay.

12^th July 2026 £320 entry

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London T100 Triathlon

World Triathlon Championship Series event at the ExCeL Exhibition Centre, Royal Victoria Dock.

25^th July 2026 26^th July 2026 From £85 entry

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Chillswim Windermere End to End

England's longest swim - 11 miles end to end of Lake Windermere.

5^th September 2026 £200 entry

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Swim Serpentine

UK's biggest one-day open-water swimming festival, celebrating its 10th anniversary. Takes place at the London 2012 Olympic venue in Hyde Park.

19^th September 2026 £35 entry

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Hever Castle Triathlon

Weekend of multisport at stunning Kent castle. 2027 World Championship Aquabike Qualifier.

26^th September 2026 27^th September 2026 £20 entry

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