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 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.
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.
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!
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.
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:
• Full sponsorship for charity – You'll pay a small registration fee and have a minimum fundraising target. We will pay for your event place.
• Mixed funding for charity – You'll pay for half your place and have a smaller minimum fundraising target. We will pay for the other half of your event place.
• Own place charity fundraising – You'll pay for your whole place so you won’t have a minimum fundraising target, we will just ask you to raise as much as you can.
Date: 13-14 June 2026
Location: Cotswolds
Event type: Walk, Jog, Run
Distance: 10, 25, 50, 100km
Fundraising target: £100-575
Registration fee: £20-50
(Get 25% off your registration for the Full Charity Sponsorship option!)
The Cotswold Way provides a stunning setting for a testing challenge - with some fantastic views through the heart of the Cotswolds for you and thousands of other participants. Rolling hills all to be completed at a pace of your choice – this is not an event to miss!
Date: 4-5 July 2026
Location: Peak District
Event type: Walk, Jog, Run
Distance: 10, 25, 50, 75, 100km
Fundraising target: £100-575
Registration fee: £20-50
(Get 25% off your registration for the Full Charity Sponsorship option!)
The Peak District Ultra Challenge starts and finishes at the basecamp hub in Bakewell. With a range of distances to suit your ambitions, there’s a trek for everyone through Derbyshire’s finest scenery.
Date: 18-19 July 2026
Location: South Wales
Event type: Walk, Jog, Run
Distance: 10, 25, 50, 75, 100km
Fundraising target: £100-375
Registration fee: £20-40
(Get 25% off your registration for the Full Charity Sponsorship option!)
Join this new Ultra Challenge for 2025, set in the stunning Gower Peninsula – the UK’s first Area of Outstanding Natural Beauty and famous for its golden beaches, limestone cliffs, wild moors, ridges, and woodlands. Taking in the best of the Peninsula and it’s varied landscape, this is not a challenge to miss!
Date: 25 July 2026
Location: Somerset/Exmoor
Event type: Walk, Jog, Run
Distance: 10, 25, 50km loop
Fundraising target: £100-375
Registration fee: £20-40
(Get 25% off your registration for the Full Charity Sponsorship option!)
A fantastic summer challenge that takes in the first section of the famous 630 mile South West coastal path. After a climb of 1600m, you’ll be treated to magnificent views of the surrounding Exmoor landscape!
Date: 01 August 2026
Location: Surrey Hills
Event type: Walk, Jog, Run
Distance: 10, 25, 50km loop
Fundraising target: £100-375
Registration fee: £20-40
(Get 25% off your registration for the Full Charity Sponsorship option!)
Starting from the Guildford basecamp, take in the best of the Surrey hills, the North Downs Way and the surrounding countryside on this challenge. This event offers fabulous views out to the South and is easily accessed from London.
Date: 22 August 2026
Location: Woolwich Barracks
Event type: Walk, Jog, Run
Distance: 10, 25, 50km loop
Fundraising target: £100-375
Registration fee: £20-40
(Get 25% off your registration for the Full Charity Sponsorship option!)
Explore some of the capital’s less known historic areas with this tour of the ‘gateway to London’ along the Thames’s eastern section. Start alongside the grandeur of Woolwich Royal Artillery Barracks before heading into the heart of London.
Your registration includes:
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