🏊 2026 Swim Serpentine

Thank you very much for your interest in swimming with Whisper in Swim Serpentine 🥇on Saturday 19 September 2026!

The places we have

Distance	Availability
2 mile	Available 💚
1 mile	Waiting list only ❤️
half mile	Available 💚

For distances that are unavailable, you can ask to be added to our waiting list.

Whisper offers you and your supporters a cause where even small donations can be life-changing ✨. We're a very high-impact charity that funds Whisper's Magical Children's Hospital 🏥, a maternity unit 🤰🏾, an ambulance 🚑 and a nursing school 🎓 in Jinja, Uganda. We run on an annual donation budget of around £250,000. Every £20.28 donated allows us to treat a child, an average that includes some lengthy inpatient stays 🤒. We estimate that every £318 donated saves a life that would not otherwise have been saved 🧸. Outside Uganda we're entirely staffed by volunteers 💖, helping donations go further.

Swim Serpentine is an annual swimming event 🏆 that takes place in the Serpentine lake 🦆 in London's Hyde Park. It's a pleasant day out even as a spectator 🥳; tell your friends! You can find out more about the event on the official site. There are several available distances:

Distance	Equivalent in lengths of a 25m pool
half mile	32
one mile	64
two miles	129
six miles (not offered by Whisper)	386

For comparison, a two mile swim takes less time than a half marathon 🏃 and takes less energy, but efficient technique ⏱️ is important for a swim. A six mile swim is similar to a marathon in time and energy.

In return for a place we'd like you to donate or commit to raising at least £150 (half mile), £200 (one mile) or £300 (two miles) for us.

Let's take a quick tour 👀 of some of the things we do. This is Whisper's hospital; the hospital opened on another site in 2016 and moved to this building in 2018:

This is the ambulance in front of the hospital:

This is one of our operating theatres:

This is our delivery room in the maternity unit:

This is a lecture in our nursing school, which has 40 nurses in its latest intake:

We can offer you:

personal attention - we're a small organisation 🙏
no registration fee
advice and practical help with fundraising

I cannot tell you how inspiring this charity is. They do incredible work. I am raising money for Whisper but the support I am getting from them is fantastic. I have never had this before when raising money for charity. a previous runner in the London Marathon

Questions? Click to chat on WhatsApp:

Apply for a place

First name

If you join our team, we'll use this name to register you for the event.

Last name

If you join our team, we'll use this name to register you for the event.

Preferred name (optional)

If there's a name you'd prefer us to use when we contact you, let us know here.

Your email

Please use an e-mail address that you check regularly.

Phone number (optional)

Phone number is optional, but it may be helpful if we can contact you by SMS or WhatsApp if we can't reach you by email.

Are you available to take part in the event on 19 September 2026? Yes No

Will you be at least 12 years old (half mile), 16 (one mile or two miles) on 19 September 2026? Yes No

Would you commit to raising at least £150 (half mile places), £200 (one mile places), £300 (two mile places) for us? Yes No

Which distance would you like to swim? half mile 1 mile 2 mile

Any other comments? (optional)