Saturday 9th – Sunday 10th September 2023

England’s greatest river provides a fantastic backdrop for an unforgettable challenge. Over 3000 adventurers will join the Putney Bridge start, and the full 100km route heads upstream to Henley along the famous Towpath. It’s through Richmond, Hampton Court, Runnymede, and Windsor, with some wonderful scenery to a riverside finish line. With 50km & 25km distance options also available – plus the separate 25km ‘Thames Bridges Trek’ & ‘The Moonlight 10 Walk’ through Central London as part of the weekend ‘festival’ – there’s a Thames Challenge for everyone!

There are a number of different options available from the full 100km ultra challenge to a 22km part challenge.  You will be fully supported by Ultra Challenge team, including Marquee rest stops, lots of food and drinks, medical and massage teams and a fully signed route to guide you.


To learn more about this incredible Ultra Challenge, click on the link below:

Join #TeamPetals and you will receive:


  •  #TeamPetals technical running top

  • Support with fundraising to help you hit your target

  • Medal, T shirt, glass of bubbly on completion

  • Fully signed route

  • Regular rest stops

  • Medics, marshals, and massage


If you have any questions please contact our Events team on 07513 701786 or email events@petalscharity.org