A couple walking into the woods

Chiltern 50 Challenge

Event Type Trek, Jog or Run
Date 28 September 2024
Location Henley-on-Thames
Registration Fee £20 - £139 depending on option chosen
Fundraising Target £150 - £360 depending on option chosen
Distance Options 25km or 50km
Event Organiser Action Challenge

Choose a charity sponsorship place and get 50% off your registration fee - just select Alzheimer's Society as your charity on signup!

The challenge

This 50km looped route covers some of the best of the Chilterns countryside, with historic trails, rolling hills, nature reserves, and fantastic views.

Starting & finishing at the base-camp in Henley, there’s a Saturday night celebration BBQ, bar & entertainment, with extensive on-site camping & parking options.

It’s a route with real variety and some wonderful scenery – and with 25 km options also available – there’s a Chiltern Challenge for everyone!

Your entry includes free food and drink at regular rest stops, plus support including medics, marshals and massage. As you cross the finish line, you’ll get a glass of fizz and a medal to commemorate your achievement.

As Alzheimer's Society are an official partner on this event, you get a 50% discount on the ‘Full Sponsorship’ registration fee when signing up to support us.

The route

Distance options

  • Full Challenge (50km) - Henley loop
  • Half Challenge (25km) - Henley loop (but shorter!)


You only need to raise half of the fundraising target 3 weeks ahead of the Chiltern 50 Challenge to confirm your place - you can then top up the rest during, and after, the challenge!

Charity sponsorship - pay a small registration fee and do lots of fundraising!
Remember you only need to raise half of the fundraising target to confirm your place.

Full Challenge (50km) - £30 registration fee + £360 in fundraising

Half Challenge (25km) - £20 registration fee + £240 in fundraising

Mixed Funding - pay a higher contribution to the cost of your place and fundraise less

Full Challenge (50km) - £75 registration fee + £225 in fundraising

Half Challenge (25km) - £50 registration fee + £150 in fundraising

Don't worry, we're on hand to help you reach your goal, with lots of fundraising materials at the ready! Please get in touch for a chat if you have any questions, we're always happy to hear from you. 


For further information about the challenge, its inclusions, the route and FAQs, please visit the official organiser's website or email [email protected].

If you have any fundraising questions, you can get in touch with a member of the Events team by getting in touch on the contacts below, and we will be delighted to help.

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