About the event

You can join this amazing swim in 2022 now! Just fill in our form to let us know you want to join the team.

If you are a keen swimmer, or fancy trying out a swim for the first time, why not join us and raise money for people living with mental illness who need our help? 

This is a one day open water swimming festival staged in the heart of London, organised by London Marathon events.

We will support all your fundraising efforts and you will receive a snazzy Rethink t-shirt to wear on the day.

The Swim Serpentine organisers are planning the day of the event with the current Covid crisis in mind. For the latest news look here.

The details

Date: 17 September 2022 
Location: The Serpentine, London 
Cost: £25
Target: Minimum £250

Who are Rethink Mental Illness?

We’re Rethink Mental Illness and we’re on a mission to bring about meaningful change, through our services, groups and groundbreaking campaigns. We know, from our vast experience, that people severely affected by mental illness can have a good quality of life. With your support, we will make that possible.

How will your money support us?

Every penny you raise for us will help empower those severely affected by mental illness. Through our network of support groups, services and helplines, last year we reached: 


You can find out more about our work by visiting our vision and impact page

How we'll support you

  • Free Rethink Mental Illness t-shirt
  • Tips and advice on your swim
  • Support on your fundraising journey

Register my Interest

Let us know if you have your own place on this iconic swim and help us ensure that no one with mental illness feels alone.
We care about your privacy
This website uses cookies to give you the best experience.
Read our updated privacy policy and cookies policy