This popular riverside challenge sees more than 3,000 participants taking on the Thames Path which follows England's greatest river from Putney Bridge to Henley. Take in historic landmarks such as Hampton Court and Runnymede where the Magna Carta was signed.
The Thames Path Ultra Challenge invites you to walk, jog or run a distance of your choice, against the fantastic backdrop of England’s greatest river.
With 75km, 50km, 25km and 10km challenge options also available – there’s a challenge for everyone – and you can join as an individual or as a team of friends or family.
Whether you sign up by yourself or with a group, pick your distance and choose the ‘Full Charity Sponsorship’ to get your 25% off registration fee.
For full details of prices, check out the Thames Path Ultra webpage which explains each option available to you for this challenge.
You will have a dedicated member of The Royal Marsden Cancer Charity team on hand to help you with advice and tips on fundraising. We will be there for you every step of the way!
Our partners at Action Challenge will provide everything you need to help you get ready for your challenge including training plans, an event app and access to their 70,000-strong Ultra Challenge Facebook community.
Join us in 2026 and take on the Thames Path Ultra challenge!
Whether you take on the full 100km route, or a shorter challenge, join Team Marsden to discover the beauty of the England's greatest river while raising vital funds for ground-breaking cancer research. See the route map here.
Still have questions? For more information, visit the Thames Path Ultra website.
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