Your chance to take on challenges in some of the UK's most breathtaking locations while fundraising for The Royal Marsden Cancer Charity. An Ultra Challenge is a once-in-a-lifetime experience, and there’s something for everyone!
As The Royal Marsden Cancer Charity are an Associate Partner on the 2026 Ultra Challenge series, you’ll get a 25% discount on the ‘Full Sponsorship’ registration fee when signing up to fundraise for us!
Walk, jog or run at your own pace on the Ultra Challenge Series event of your choice. With 10km, 25km, 50km,75km and even 100km challenge options available, there’s a challenge for everyone! You can join either as an individual or as a team of friends or family – the more the merrier.
Registration
Sign up via Action Challenge and make sure to choose to take on your challenge in support of The Royal Marsden Cancer Charity. Registration fees and minimum fundraising targets depend on the event, distance and funding option you choose.
Fundraising
You will have a dedicated member of The Royal Marsden Cancer Charity team on hand to help you with advice and tips for fundraising. We will be there for you every step of the way!
Get ready for your trip!
Our partners at Action Challenge will provide everything you need to help you get ready for your trek, including training plans and discounts for any new gear you might need to purchase.
Take on the challenge of a lifetime for The Royal Marsden Cancer Charity
Join us for your unforgettable adventure knowing you've raised vital funds that will transform the lives of cancer patients around the world.
Each event offers three funding options so you can make sure the challenge is right for you:
Date: 28 March 2026
Location: Bath
Event type: Walk, Jog, Run
Distance: 10, 29, 50km
Fundraising target: £100-375
Registration: £20-40
(Get 25% off your registration for the Full Charity Sponsorship option!)
Taking place in the elegant historic city of Bath, with fantastic panoramic views of the city and surrounding countryside, this is the perfect opportunity to kick off the event season and challenge yourself this spring.
Date: 18 April 2026
Location: Windsor/Thames Path
Event type: Walk, Jog, Run
Distance: 10, 25, 50km
Fundraising target: £100-375
Registration: £20-40
(Get 25% off your registration for the Full Charity Sponsorship option!)
With 50km, 25km and a new 10km option, this event is the perfect way to make your Easter an active one. Walk, jog, or run from Windsor Racecourse; whichever distance you choose, it’ll be a great way to spend your Saturday!
Date: 2-3 May 2026
Location: Isle of Wight
Event type: Walk, Jog, Run
Distance: 10, 29, 54, 106km
Fundraising target: £100-575
Registration: £20-50
(Get 25% off your registration for the Full Charity Sponsorship option!)
Trek along the spectacular southern cliffs, past the iconic Needles and up to historic Cowes at the halfway stop. For Full Island challengers, it's on to the cliffs of Ventnor, and back to the welcome Base Camp in Chale after an epic 106km journey.
Date: 16-17 May 2026
Location: Dorset
Event type: Walk, Jog, Run
Distance: 25, 50, 75, 100km
Fundraising target: £100-575
Registration: £20-50
(Get 25% off your registration for the Full Charity Sponsorship option!)
Walk, jog or run a distance of your choice, along the spectacular Jurassic Coast - a World Heritage Site. With full support all the way, you can push yourself further against a backdrop of wonderful coastal scenery and enjoy a great weekend away.
Date: 23-24 May 2026
Location: Dorset
Event type: Walk, Jog, Run
Distance: 25, 33, 42, 58, 75, 100km
Fundraising target: £275-575
Registration: £30-50
(Get 25% off your registration for the Full Charity Sponsorship option!)
The ‘original Ultra Challenge’ – join over 2,000 adventurers to take on the capital to coast route. The full 100 km route heads over the South Downs before the welcome sight of the Brighton coastline comes into view. With multiple distance options available, there’s a challenge for everyone, so why wait?
Date: 6-7 June 2026
Location: Lake District
Event type: Walk, Jog, Run
Distance: 10, 25, 50, 100km
Fundraising target: £100-575
Registration: £20-50
(Get 25% off your registration for the Full Charity Sponsorship option!)
Join the Lake District Challenge and take on England's finest countryside at your pace. With stunning views en-route, you’ll take on tough hills, the Garburn Pass and a halfway point by the iconic Lake Windermere.
Your registration includes:
We’d love to keep you up to date with inspiring stories, the latest breakthroughs, and ways you can make a difference.
