The 2025 Ultra Challenge Series is open for registrations, and hundreds of keen fundraisers are thinking of their next big fundraising challenge.

Are you a keen walker or runner looking for a real challenge? Perhaps you want to get in shape, to re-energise, or to fundraise for Action Kidney Cancer? If so, these events are for you! Whether it’s along a stunning coastline, or on trails in the best of Britain’s countryside, your Ultra Challenge will be unforgettable. With full support all the way, new friends made, and an amazing sense of achievement. The 2025 events calendar is live for registrations. Register for a 2025 event 1 November 2024 to get a free Ultra Challenge Tech T-shirt (worth £20) and save up to 75% on the registration fee. Register for multiple events and save up to 25%. Join an event, get active, and go for it!

For information about the events on offer, please take a look here.

Sign up soon to secure your place in any of the 18 Ultra Challenge Events in 2025!

We would love for you to join an Ultra Challenge Event in 2025 to support Action Kidney Cancer.