Chiltern 50 Ultra Challenge

A route following Chilterns finest countryside, with historic trails, rolling hills, nature reserves, and fantastic views. Various distances to choose from.

Walk towards a future free from arthritis

Location: Henley basecamp
Date: 26 September 2026
Cost: Various options starting from £20
Minimum sponsorship target: A range of targets depending on distance

This route follows the Chilterns' finest countryside, with historic trails, rolling hills, nature reserves and fantastic views. With a 50km, 25km and 10km loop available, this is the perfect challenge for anyone looking for something to do before those Autumn months set in. Choose the distance right for you, with full hospitality and support, including food, drinks and medics all included.  

Whether you’re a walker, experienced trekker, or a marathon runner who wants to increase their distance, this ultra might be for you. Walk, jog, or run – as an individual or a team, all while working towards our ultimate vision – a future free from arthritis. With your support we can continue to invest in world-class research, delivering high-quality services and campaigning on issues that matter the most to people with arthritis. 

Enquire here

 

What to expect as an Arthritis UK walker

  • An Arthritis UK running vest or t-shirt
  • A welcome pack full of helpful training and fundraising advice
  • Dedicated training and fundraising support from our expert team
  • Access to our closed Facebook group of our community of supporters
  • A finisher's medal from the organiser

Funding options

Full sponsorship for charity

You pay a smaller registration fee for the event and then fundraise the target amount (with our support of course)  

  • 50km - £40 Registration fee and a fundraising target of £375
  • 25km - £30 Registration fee and a fundraising target of £275
  • 10km - £20 Registration fee and a fundraising target of £100 

Self funding

You pay the full cost of your registration fee and you can choose whether to fundraise 

  • 50km - £139 Registration fee and set your own personal fundraising target 
  • 25km - £89 Registration fee and set your own personal fundraising target 
  • 10km - £39 Registration fee and set your own personal fundraising target 

Mixed funding for charity

A mixture of the two with an amount towards the registration fee but also a smaller fundraising target 

  • 50km - £75 Registration fee and a fundraising target of £225 
  • 25km - £50 Registration fee and a fundraising target of £150 
  • 10km - £22.50 Registration fee and a fundraising target of £70 

How to enter

Sign up to walk with us on this beautiful challenge route. 

Contact us

Contact our team at fundraising@arthritis-uk.org with questions or to get support. 

Thank you for walking for Arthritis UK.

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