Chiltern 50 Ultra Challenge
Walk, jog or run to stop MS and take part in the Chiltern 50 Ultra Challenge on Saturday 26 September 2026.
New Year deal – Save 50% off the standard registration fee, when you sign up to the full charity sponsorship option for any 2026 Ultra Challenge event!* Use code HELLO2026 at the checkout. Offer runs from Friday 26 December 2025 until Saturday 31 January 2026.
*This offer excludes the 10km and 10 mile events.
A 50km looped challenge in some of the Chilterns finest countryside, with historic trails, rolling hills, nature reserves, with fantastic views. Join up to 2,000 adventurers and take it on at your pace as a walk, jog, or run!
Abasecamp in Henley, and a route with real variety and some wonderful scenery – and easily accessible from London. Sign up as an individual or as a team. With 25km and 10km options also available, there’s a Chilterns Challenge for everyone!
Visit the Chiltern 50 Ultra Challenge website for more information
Fundraising options:
1. Charity sponsorship
As an official Charity Partner, you'll get 25% off the standard registration fee, when you sign up to the full charity sponsorship option for any distance!
50km challenge: secure your place for £40 when you pledge to raise £375
25km challenge: secure your place for £30 when you pledge to raise £275
10km challenge: secure your place for £20 when you pledge to raise £100
2. Mixed funding
Visit the Chiltern 50 Ultra Challenge website for more information about mixed funding.
3. Own place
Visit the Chiltern 50 Ultra Challenge website for more information about own place fundraising.
What’s included:
- Free food and drink at regular rest stops
- Support including medics, marshals and massage
- As you cross the finish line, you’ll get a glass of fizz, t-shirt, and a finisher's medal
- And much more!
Your MS Superstar VIP package
When you fundraise with us you'll receive:
- an MS Society t-shirt to help you look the part on the day
- a welcome pack crammed with fundraising tips and materials to help you reach your goal
- support from our dedicated events team to help you achieve your goals
Want to be there?
We'd love to have you on the team!
Need some help?
If you have any questions about this challenge, get in touch with our friendly fundraising team.
Download own terms and conditions
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