Climb, crawl and conquer Tough Mudder London South – the ultimate obstacle course challenge.
Push yourself beyond your limits as you take on mud-filled obstacles, climbing walls, ice-cold water and team challenges designed to test your strength, endurance and determination. Whether you choose the 5K or the 15K course, Tough Mudder London South is an unforgettable experience that's all about teamwork, achievement and having fun.
Whether you're taking on your first obstacle course or returning for another muddy adventure, every obstacle you overcome for Team Treloar's will help raise vital funds to support physically disabled children and young people.
Event Details
Date: Saturday 19th September or Sunday 20th September
Distance: 5k or 15k
Location: Holmbush Estate, Horsham
5k registration fee: £30
15k registration fee: £35
5k fundraising target: £200
15k fundraising target: £300
Only 5 spaces per distance per day available, book now!
Tough Mudder - London South Saturday 5k
Tough Mudder - London South Saturday 15k
Tough Mudder - London South Sunday 5k
Tough Mudder - London South Sunday 15k
Browse other Tough Mudder locations and dates
Tough Mudder South West 5k 15 Saturday August 2026
Tough Mudder South West 15k 15 Saturday August 2026
Tough Mudder Manchester 5k Saturday 10 October 2026
Tough Mudder Manchester 15k Saturday 10 October 2026
Why choose Tough Mudder London South?
Tough Mudder is unlike any other challenge event, offering:
- The choice of a 5K or 15K obstacle course
- A weekend of challenges with Saturday and Sunday event options
- World-famous obstacles featuring mud, climbing, crawling and water
- An event designed around teamwork, determination and fun
- An unforgettable challenge to complete with friends, family or colleagues
- The chance to push yourself outside your comfort zone while supporting a great cause
Why run for Treloar's?
When you join Team Treloar's, you'll receive:
- Dedicated fundraising support
- A Treloar's running vest
- Fundraising tips and resources
- Encouragement every step of the way
- The knowledge that you're helping physically disabled young people achieve more
Will I receive fundraising support?
Yes! Our fundraising team will be here to support you every step of the way with fundraising ideas, resources and advice to help you reach your target.
Will I receive a Treloar's running vest?
Yes. Everyone taking part for Team Treloar's will receive a Treloar's running vest (or equivalent event top where applicable) to wear on the day.
Can I use my own place?
Yes! If you've already secured your own place, we'd love you to join Team Treloar's and fundraise for us. Get in touch with our fundraising team and we'll support you all the way.
Where does my fundraising go?
Every pound you raise helps Treloar's provide specialist education, therapy and care for physically disabled children and young people, helping them achieve greater independence and live life to the fullest.
Looking for a different challenge?
Browse hundreds of runs, cycles, obstacle events, bungee jumps and more on our challenge events page to find the perfect event for you.
Click here to find your challenge
Need a helping hand?
Have a question about Tough Mudder or looking for something else? Our fundraising team is here to help you find the perfect event. If you need any assistance, please contact events@treloar.org.uk
