Get 25% off your registration!
As The Royal Marsden Cancer Charity are an Associate Partner on the 2025 Ultra Challenge series, you’ll get a 25% discount on the ‘Full Sponsorship’ registration fee when signing up to fundraise for us!
Push yourself further with six great summer events to choose from in 2025!
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.
On this page:
How to take part
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.
Payment options
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.
Cotswold Way Ultra Challenge
| Date: 21-22 June 2025 | 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, so sign up for the Cotswold Way Ultra Challenge now.
Peak District Ultra Challenge
| Date: 28-29 June 2025 | 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. Push yourself this summer and sign up for the Peak District Ultra Challenge!
North Downs 50
| Date: 12 July 2025 | 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. Be part of something amazing - join Team Marsden for the North Downs 50.
Gower Peninsula Ultra Challenge
| Date: 19-20 July 2025 | 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 – sign up for the Gower Peninsula Ultra Challenge!
South West Coast 50 Challenge
| Date: 2 August 2025 | 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. Find out more and sign up for the South West Coast 50 Challenge today!
London Summer Walk
| Date: 23 August 2025 | 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. See the city in a whole new light and sign up today for the London Summer Walk!
What's included when I join Team Marsden?
Your registration includes:
- Your very own Royal Marsden Cancer Charity top to wear on the day - perfect to help raise awareness!
- One-to-one support from a dedicated member of the charity team.
- Training support and guides via the Ultra Challenge app.
- Access to our fun, friendly, and supportive online community in the Team Marsden Challenge Events Facebook group