Image shows a group of walkers following a trail to the top of a hill. Trees and green fields line the trail.
Walks and treks

Chiltern 50 Challenge

  • Date and Time info: 23/09/2023
  • Registration fee: £30
  • Fundraising target: £395
  • Face-to-face

This ‘end of season’ 50km looped route covers some of the best of the Chilterns countryside. You can walk, jog, or run along historic trails and over rolling hills. Starting and finishing at the Henley-on-Thames base camp, there’s a Saturday night celebration BBQ and entertainment with camping options.

Passing through nature reserves, forests, and a few hills with great views – it’s a route with real variety, and some wonderful scenery – and it’s all easily accessible from London. With 25km options also – there’s a Chiltern Challenge here for everyone!

Registration options

There are several different ways that you can join:

Charity Sponsorship – pay a small registration fee and do lots of fundraising!

  • 50km Challenge – £30 reg fee + £395 in fundraising
  • 25km Challenge – £15 reg fee + £250 in fundraising

Mixed Funding – pay a higher contribution to the cost of your place and fundraise to a lower target.

  • 50km Challenge – £72.50 reg fee + £220 in fundraising
  • 25km Challenge – £45 reg fee + £135 in fundraising

Self funding – pay for your place and have no fundraising target

  • 50km Challenge – £129 reg fee
  • 25km Challenge – £79 reg fee

Take on the Chiltern 50 Challenge

Find out more and sign up
“Retina UK gave me the best support after my diagnosis. The support, patience, empathy, kindness and understanding I received from helpline staff is one of the main reasons I came to terms with my diagnosis.”

Support along the way

  • Free Retina UK t-shirt
  • A dedicated member of our fundraising team with top tips, advice and materials to help you reach your target
  • Fully signed route with rest stops and free food and drink
  • Medics, massage, and pace walkers
  • Medal, t-shirt and glass of fizz as you cross the finish line.

If you have any questions or require help or support, please contact our Fundraising Team on 01280 821334 or email