Take on the capital to coast London 2 Brighton Ultra Challenge and join 2,000 Challengers on this iconic route. Complete distances from 25km up to the full 100km Challenge as a walk, jog, or run all whilst fundraising for an important cause. 

Starting from Richmond-Upon-Thames you’ll head along the Thames Path, before trekking over the North Downs through wonderful Surrey and Sussex countryside. Relax and refresh at your halfway stop in Tulley’s Farm, before the full 100km route heads over the South Downs where the welcome sight of the Brighton coastline comes into view. There is nothing like that feeling of seeing the sea!

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 even camping and transfer options available so you can plan your whole weekend smoothly.

Join the UK’s #1 Series of treks and trail runs in 2027, and push yourself further with the London 2 Brighton Ultra Challenge.

Head to our Macmillan Ultra Challenge page to find out more and sign up.

All distance options have Charity, Mixed Funding or Self-Fundraising for Charity 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 landing page. You can also find FAQs here, or contact the Ultra Challenge event organisers directly

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

Check out the route map on the Ultra Challenge website.

Each Action Challenge Ultra Series event covers different terrain and landscapes, including steep climbs and descents, stiles, and uneven pathways subject to weather effects. 

If you have any queries about the route, or have any special requirements to consider that you wish to chat through further before registering, please do not hesitate to contact the Action Challenge Team who will be happy to discuss course suitability. 

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