Challenge Events

Run or swim with Whisper's Magical Children's Hospital 🏆

As a high-impact charity, Whisper offers you and your supporters a cause worth supporting, where even small donations can be life-changing ✨

Things we normally offer our runners and swimmers:

No entry fee (this is unusual).
We count legitimate Gift Aid towards your fundraising target (this also seems to be unusual).
There's a matched giving option which can almost double 🎁🎁 the amount you raise.
If you have to drop out for some reason, we can usually offer you a place the following year and credit you with your fundraising; conditions may apply.
The places and related expenses are funded by a Whisper supporter as a thank you 👏🏼 to YOU for taking part. Your supporters aren't paying for your place.

We currently have charity places for the events listed below. If the event 🏆🏊🏼🪂🏃🏼 you are interested in is not shown, feel free to contact us; for some events we can get charity places, for others it's best if you apply for your own non-charity place.

Swim Serpentine 2026

A fun open water swimming event 🦆 in London's Hyde Park, with various distances available.

Date: Saturday 19 September 2026

Find out more