Chiltern 50 Challenge
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 our Base Camp in Henley-on-Thames, 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 options also – there’s a Chiltern Challenge here for everyone!
Your entry includes free food and drinks at regular rest stops, plus support including medics, marshals, and massage. As you cross the finish line, you’ll get a glass of fizz, a t-shirt, and a medal to commemorate your achievement.
More information
Visit the event website for more information
Fundraising options
Tap the ‘Register’ button to apply for a Thyroid UK Charity place via the event organiser. We will contact you with instructions on how to confirm your place.
Note: At least 50% of the Minimum Sponsorship target should be with Thyroid UK by 6 weeks prior to the Challenge. At this time we will pay a Fee for your place to the Organiser (similar to the Self Funding cost). Failure to meet the 50% target may result in cancellation by us. The remaining 50% should be with us 4 weeks after the Challenge.
Charity Sponsorship
Pay a small registration fee and do lots of fundraising! We cover your event place cost.
| Event | Registration fee | Minimum sponsorship |
|---|---|---|
| 25km | £10 | £250 |
| 50km | £20 | £395 |
Mixed Funding
Lower charity fundraising target & you pay half the event self-fund cost (We pay the other half).
| Event | Registration fee | Minimum sponsorship |
|---|---|---|
| 25km | £45 | £135 |
| 50km | £72.50 | £218 |
Self Fund
Pay full event place cost when you register. Fundraise as much as you can for us.
| Event | Registration fee | Minimum sponsorship |
|---|---|---|
| 25km | £79 | £0 |
| 50km | £129 | £0 |