River swimming events

River swimming events

Experience beautiful locations from a new perspective in complete safety.

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River swims in the UK

Organised river swims allow you to experience beautiful locations from a new perspective in complete safety. River swims can range from less than a kilometre to several miles - some events even use the tide to make it easier! Grab your wetsuit and discover a new way to adventure!

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River swims in 2024/2025

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

  • Sun 29 Jun 2025
  • £54.50-£63.50
Henley-on-Thames, Berkshire, UK

Selkie Henley Classic

Swim the 2.1km world-renowned Henley Royal Regatta course at dawn. Exclusive access to the river as the sun rises makes this a bucket-list event like no other!

  • 2.1 km river swimming
  • Sat 26 Jul 2025
  • £63.50
Henley-on-Thames, Berkshire, UK

Club to Pub

A summer evening 1.5km swim to the pub taking place in the heart of Henley.

  • 1.5 km river swimming
  • Sun 10 Aug 2025
  • £95
Marlow, Buckinghamshire, UK

Thames Marathon | Half Marathon Swim

A long-distance swimming marathon with multiple distances and feed stations from Henley-on-Thames to Marlow.

  • 5.5 km river swimming
  • Sun 10 Aug 2025
  • £130
Marlow, Buckinghamshire, UK

Thames Marathon | Marathon Swim

A long-distance swimming marathon with multiple distances and feed stations from Henley-on-Thames to Marlow.

  • 13 km river swimming
  • Sun 10 Aug 2025
  • £119
Marlow, Buckinghamshire, UK

Thames Marathon | Mid-Distance Swim Marathon

A long-distance swimming marathon with multiple distances and feed stations from Henley-on-Thames to Marlow.

  • 9 km river swimming
  • Sun 10 Aug 2025
  • £200
Marlow, Buckinghamshire, UK

Thames Marathon | 3-Person Swim Relay

A long-distance swimming marathon with multiple distances and feed stations from Henley-on-Thames to Marlow.

  • 13 km river swimming