2025 Tough Mudder London South
Take on Tough Mudder London South
Date: 20 September
Distance: 15km, 20+ Obstacles
Whether you already have your own place or you'd like a charity place, join Team Cancer Research UK for the Tough Mudder London South and play your part in supporting vital cancer research.
How to join Team Cancer Research UK
Decide whether you'll enter with your own place or get a charity place
Sign up to get Team Cancer Research UK perks
Get fundraising for life-saving research
Get over that finish line and smash your fundraising target
About Tough Mudder London South
An adventure like no other, Tough Mudder is more than just an obstacle course.
Built on the foundation of teamwork and overcoming obstacles, it's the chance to unplug from the daily grind, experience the unexpected, and accomplish something bigger than yourself.
Grab your friends, there's a Tough Mudder event that's perfect for you.
Take on the Mudderhorn
Forty feet up, forty feet down, with nothing but a net.
The difference that your money makes
100 CRUK participants taking on Tough Mudder Events
Hitting their fundraising targets to raise a total of £100,000
Could fund 3 postdoctoral students for a whole year
Team Cancer Research UK participants receive
A personalised Cancer Research UK running t-shirt or vest
Support with fundraising and training to help you smash your challenge
Support in the run up to the event and on the day
An official finisher's medal for completing your race
Get training support
We've teamed up with experts to give you the best training support and advice for your event. Whether it's your first time training or you're looking to smash a PB, we've got a training plan for you.
Get fundraising support
We're with you every step of your fundraising journey so you can smash your target. Once you've signed up, we'll send you everything you need to get going such as fundraising ideas, top tips, planners and posters.
Get kitted out
We worked with Scimitar to create Cancer Research UK sportswear that’s comfortable, looks great and supports our vital work. 20% of the price of these products will be paid to Cancer Research UK.
