North Downs 50 Ultra Challenge

The North Downs provides a fabulous backdrop to an incredible challenge with 50km, 25km, and 10km options to push yourself further. Walk, jog, or run across the best trails in Surrey all whilst fundraising for charity and making a real difference.

Head out from basecamp in Guildford along the North Downs Way and up to a spectacular view at St. Martha’s Church. Full 50km Challengers then head back towards basecamp through idyllic villages and the scenic Blackheath Common. This Challenge is easily accessible from London with excellent transport connections – the perfect Ultra Challenge for all!

Join as an individual or as a team and get ready to experience full support every step of the way. Regular Rest Stops packed with food and drink, hot meals, fully marked routes, massage and medical care, marshals on course and walking the route with you, and of course an unbeatable community. There’s a range of camping options and transfers available for all Challengers so you can plan your whole weekend smoothly.

Join the UK’s #1 Series of treks & trail runs in 2027, and push yourself further with the North Downs 50 Ultra Challenge.

All distance options have Charity or Self Fund options.

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.

For full information on this challenge, please visit the Macmillan Cancer Support Ultra page. You can also find the FAQs here or contact the Ultra Challenge event organisers directly.

Please make sure you have read our Terms and Conditions before signing up.

By joining us you'll know that you're helping improve the lives of people living with cancer in the UK today.