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Windsor 50 Ultra Challenge

Walk, jog or run a 50km Ultra, 25km half challenge or a 10km and achieve something special for #TeamKidney.

Walk all over kidney disease

Get active after the Easter holidays and take on a historic 50 km Ultra, a testing 25 km, or a sharp 10 km challenge at your pace as a walk, jog, or run as part of #TeamKidney.

From a Windsor Racecourse basecamp 2000 adventurers will head out on looped routes through the Great Park with fantastic views of the Castle, on to Runnymede, along the Thames Path, and taking in some wonderful surrounding countryside.

You’ll get full support along the way the way, plus plenty of food & drink, a special medal, a T-shirt, a celebration finish back at basecamp - and a great sense of achievement!

Push yourself further in 2026 and help raise vital funds for those living with kidney disease.

Windsor

18 April 2026

Distance: 50km, 25km or 10km

Registration fee: £20-£40

Minimum sponsorship: £100-£375 (depending on event)

As part of #TeamKidney you'll receive...

Tshirt and free fundraising pack

A Kidney Research UK t-shirt when you raise £50 or more

A fundraising pack full of tips and ideas

Support from our dedicated team every step of the way

Regular updates to inspire you with training and fundraising

Other useful stuff

Image FR pack

Fundraising

Get all the materials and resources you need for your fundraiser.

London Bridges Walk walkers

Dress to impress

Get extra merchandise and show everyone you're on #TeamKidney.

A runner finishing an event wearing the Kidney Research UK running top

Got your own place?

Tell us about your event and we'll support you all the way.

London Bridges Walk walkers

Fundraise online

Get your fundraising off to a flying start with your own JustGiving page.

Frequently asked questions

Got a question? Get in touch

If you have a question or would like to chat about one of our events, the team here at Kidney Research UK are happy to help. Please get in touch.

0300 303 1100

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