Chiltern 50 Challenge
27 September 2025
75% off registration fees with discount code WWF25 for charity place (full sponsorship)
About the challenge
Dates: Saturday, 27 September 2025
Event type: Trek, jog or run
Location: Henley-on-Thames
Registration Fee: £20 - £75 depending on chosen option
Fundraising Target: £70 - £375 depending on chosen option
Level: Moderate
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 & finishing at our Base Camp in Henley-on-Thames, 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!
Join the challenge
The route and distance options:
Full Challenge (50km) - Henley loop
Half Challenge (25km) - Henley loop
10 km Challenge - Henley loop
Registration fees and sponsorship targets:
Charity sponsorship - pay a small registration fee and do lots of fundraising
50km Challenge - £40 registration fee + £375 in fundraising
25km Challenge - £30 registration fee + £275 in fundraising
10km Challenge - £20 registration fee + £100 in fundraising
Mixed Funding - pay a higher contribution to the cost of your place and fundraise less
50km Challenge - £75 registration fee + £225 in fundraising
25km Challenge - £50 registration fee + £150 in fundraising
10km Challenge - £22.50 registration fee + £70 in fundraising
Own Place Charity Fundraising - pay for your place and fundraise whatever you can:
Full Challenge (50km) - £139 joining fee + fundraise what you can
Half Challenge (25km) - £89 joining fee + fundraise what you can
10 km Challenge - £39 registration fee + fundraise what you can
For Charity and Mixed Funding options, you will need to raise 50% of your fundraising target at least three weeks before the event in order to confirm your place on the day.
How we support you
We're with you every step of the way towards event day with advice and information so you can just focus on your training and fundraising. We'll also provide:
- Our fundraising pack to help you achieve your target
- Walkers pack including WWF t-shirt and headband
- Exclusive access to our private Team Panda Facebook Group
- Online training hub to help you prepare safely for your challenge