Please note the 2024 event date is still to be confirmed by the event organisers.
Swim a mile in the iconic Serpentine lake. The mile is a classic distance in the world of open water swimming. The one-mile swim covers one full lap of the famous Serpentine lake in Hyde Park, the same course as the London 2012 Olympic Marathon Swimming event - so you’ll be following in the swim strokes of the world’s top open water swimmers.
How to enter
Register your interest to join CALM at the 2024 event.
There is a £20 registration fee and £125 fundraising target.
You must be aged 16+ on the event day to take part.
Got your own place?
If you’ve already got your own place in Swim Serpentine, we’d love to have you on Team CALM! There’s no minimum fundraising target, just raise as much as you can. Join Team CALM here.
How we’ll support you
Whether it’s your first time taking on a challenge or you’re a seasoned pro, we’ll be right there with you every step of the way. We’ll make sure you have a fantastic experience being on Team CALM. When you join our team, you’ll receive:
Fundraising and training advice and resources
The Team CALM cheer squad to give you a boost on the day
CALM kit so you can look the part
A dedicated Fundraising Team to support you
The Swim Serpentine team supports participants with a range of disabilities at this event, and have included a number of measures to help swimmers who require assistants to feel safe and confident when taking part, including:
If you have any questions about accessibility at this event, please contact the event organisers.
Got a question?
Check out our FAQs. If you can’t find an answer there, get in touch and we’ll be happy to help.