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2025 Tough Mudder London South

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Date

20 September

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Distance

15 km, 20+ Obstacles

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Location

Holmbush Estate, Faygate

Take on Tough Mudder London South

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.

Get a charity place

We can offer you a Cancer Research UK charity place in the Tough Mudder London South. Sign up to raise vital funds for research and help us beat cancer. Entry fee: £20 Minimum fundraising target: £500

Use my own place

Once you've secured your own place in the Tough Mudder London South, use it to join Team Cancer Research UK and fundraise for vital cancer research. No extra entry fee, you'll have already paid the event organiser Set your own fundraising target

How to join Team Cancer Research UK

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Step: 1

Decide whether you'll enter with your own place or get a charity place

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Step: 2

Sign up to get Team Cancer Research UK perks

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Step: 3

Get fundraising for life-saving research

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Step: 4

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.

The difference your money makes

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100 CRUK participants taking on Tough Mudder Events

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Hitting their fundraising targets to raise a total of £100,000

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Could fund 3 postdoctoral students for a whole year

Team Cancer Research UK participants receive

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A personalised Cancer Research UK running t-shirt or vest

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Training tips and plans to help you prepare

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Fundraising support to help you smash your target

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Support in the run up to the event and on the day

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An official finisher’s medal for completing your race

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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.

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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.

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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.

Find the right event for you

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Tough Mudder London West

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Bath Half Marathon

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Tough Mudder South East