About the event
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 2021 Olympic Marathon Swimming event - so you’ll be following in the swim strokes of the world’s top open water swimmers.
How to enter
Apply for a charity place now by signing up here. There is a £20 registration fee and £125 suggested 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 event offers a safe, inclusive environment for swimmers of all abilities. There is no dedicated para-swimmer wave so you will be able to select which wave you join when you sign up. For information about support on the day, please contact the Swim Serpentine team (firstname.lastname@example.org).
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.