Chiltern 50 Challenge
A 50km looped challenge in some of the Chilterns' finest countryside, with historic trails, rolling hills, nature reserves, and fantastic views. Walk, jog or run - it's your challenge, your way!
About the event
Explore the rolling hills, peaceful nature reserves and historic trails of the Chilterns on a countryside challenge starting in beautiful Henley-on-Thames!
Starting from Henley basecamp, the Chiltern 50 Ultra Challenge takes you through some of the area’s most beautiful countryside, with scenic trails, rolling hills and fantastic views along the way. Walk, jog or run the 50km loop, take on the 25km option or join the Henley 10K. With full support throughout and a celebration meal and bar at basecamp, it’s a brilliant way to spend a day outdoors while supporting Breast Cancer Now.
As Breast Cancer Now is an official charity partner, you can register for just £10 when you sign up to support us at the Chiltern 50 Ultra Challenge. Simply use code BCNDEAL10 when registering. This offer is available until 30 November 2026 and excludes the 10km distance.
What you'll get:
Inclusive and fun event with a great atmosphere
A fully signed route, with a team of ‘Trekmasters’ out on the trail with you
Regular covered rest stops, with free food and drink, massages and medics
An epic finish line moment, with a glass of fizz, medal and t-shirt
Camping, transfer and parking options to make getting there and away easy
Full fundraising support, and a choice of fundraising options
We'll support you all the way
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Breast Cancer Now technical t-shirt
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Plenty of fundraising and training support
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Regular e-newsletters to keep you up to date
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Support from a dedicated member of the team
Why your support matters
Ask us a question
Have a question about the Chiltern 50 Challenge? We're here to help. Send us an email or call us on 0345 092 0804.
What else is on?
Walking | Running | Ultra Challenges
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