Kent Downs 50 Ultra Challenge 2025
Take on the Kent Downs 50 Challenge, venturing around the picturesque North Downs, Aylesford, the River Medway, and the Len Valley Walk to the majestic Leeds Castle. Sign up today, and go the extra mile for the 3 million people in the UK who are living with cancer.
About this event
Taking place in the ‘Garden of England’ the main 50km looped route heads anticlockwise around the Kent Downs – starting on the North Downs Way to Blue Bell Hill, around picturesque Aylesford, and following the River Medway to Mote Park at halfway for a picnic. Along the Len Valley Walk to the majestic Leeds Castle, then the North Downs Way back to the showground finish line and celebration.
With 25km and 10km challenge options and weekend camping also available - there's a challenge here for everyone.
As Macmillan are an official partner you get a 50% discount on the ‘Charity Sponsorship’ registration fee when signing up to support us. Head to our dedicated Macmillan Ultra Challenge page to find out full details of prices and to sign up.
How to enter the Kent Downs 50 Ultra Challenge 2025
All distance options have Charity, Mixed Funding or Self Fund options.
Charity fundraising
Mixed fundraising
Self funded place
Great achievements lie beyond comfort levels - join Team Macmillan
Why should I join?
You’ll get full support and hospitality on the way, leaving you to focus on your challenge:
• Join as an individual or team
• Multiple distance options
• Camping packages available
• Take on the challenge at your own pace
• Fully supported and signed route event
• Food and drink provided
• Medical and welfare tents along the course
• Access to an exclusive Ultra Challenge event app
• Finisher’s medal, t-shirt, and glass of fizz - plus other goodies available!
How we'll support you
As part of Team Macmillan, you'll receive:
But most importantly...
We'll provide you with a reason to keep going because you'll know that you're helping improve the lives of people living with cancer.
Donations make up 98% of our annual income so we simply couldn't do what we do without you.
More about this event
For full information on this challenge, please visit the Macmillan Cancer Support Ultra page. You can also find the FAQs here or contact the Action Challenge event organisers directly.
Please make sure you have read our Terms and Conditions before signing up.
Ready to join?
By joining us you'll know that you're helping improve the lives of people living with cancer in the UK today.