A couple walking into the woods
Trek

Chiltern 50 Challenge

Event Type Trek, Jog or Run
Date 27 September 2025
Location Henley-on-Thames
Registration Fee £20 - £139 depending on option chosen
Fundraising Target £150 - £375 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

A challenge event you can take on at your pace. The Chiltern 50 Challenge invites you to walk, jog or run a distance of your
choice, along a signed route, with free food and drink at regular rest stops, plus support including medics, marshals and
massage. Get the ‘Ultra Challenge’ support & hospitality all the way – helping you to push yourself further and achieve
something really special for the Alzheimer's Society.


This 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 & finishing at a Base Camp in Henley Showground, there's a Saturday night celebration BBQ &
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 and 10km challenge options
also available - there's a challenge here for everyone – and you can join as an individual or as a team of friends / family.


You may have to dig deep at times, you’ll meet new friends along the way, and the journey will be unforgettable! As you cross
the finish line, you’ll get a big welcome from the cheer squad, a glass of fizz, t-shirt, and a special medal to celebrate your achievement.

The route

Distance options

  • Full Challenge (50km) - Henley loop
  • Half Challenge (25km) - Henley loop (but shorter!)
  • 10km looped route from the basecamp at Henley Showground.  The route explores public footpaths  & wonderful woodlands within the Culden Faw estate.

Fundraising

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. The Reg Fees below are 50% OFF standard fees – as you’ll be fundraising for an official SERIES CHARITY PARTNER

Full Challenge (50km) - £40 registration fee + £375 in fundraising

Half Challenge (25km) - £30 registration fee + £275 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. 

Chiltern 50 Logo

FAQs

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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