See London’s most iconic sights with this fantastic walking Challenge, and kickstart your 2027. The London Winter Walk is the best way to start the year strong, and fundraise for an important cause. Whether it’s the full marathon walk across London, a scenic half marathon along the Thames Path, or the family friendly 10km and 5km. 
 
All routes start and finish at The Oval Cricket Ground and take in both sides of the Thames and the capital’s landmarks. Sign up as a team, or as an individual, and families are welcome. There’s rest stops packed with snacks and drinks, a finisher’s t-shirt & medal, and hot food back at the finish line.

As part of Team Macmillan, you'll receive:

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 Ultra Challenge 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 Ultra 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.