The Nuts Challenge: Summer Nuts
The Nuts Challenge is a mud and obstacle event held near Dorking in Surrey, close to London. The Summer Nuts edition is scheduled for 29 August 2026 and welcomes fun runners, teams, charities and corporate groups. The organiser operates a permanent assault course on natural terrain and runs events year round.
The course contains a large number of natural and man made obstacles, including mud trenches, water obstacles, walls, cargo nets, tunnels, crawling and climbing sections, and trail running between features. The site is maintained as a single, permanent course and the layout is updated regularly so returning participants can expect new arrangements of obstacles. Multiple laps are an option on some race formats.
Distances offered:
- 5K race option
- 10K race option
The event also references a challenge scale called the Nuttie Scale to indicate levels of difficulty. The format allows solo entries, team entries and entries for charity or corporate days. Risk assessments and health and safety documentation are prepared for the venue. Visit the organization's website for the most recent information.
The Nuts Challenge – The Ultimate Mud Obstacle Race in Surrey, Near London
Looking for a mud run or obstacle course race near London? Welcome to The Nuts Challenge – the UK’s original and award-winning Mud Obstacle Race, located in Dorking, Surrey. Whether you’re a first-timer or a seasoned athlete, Nuts is the ultimate obstacle course racing (OCR) experience, designed to push your limits and deliver unforgettable muddy fun. Tackle our permanent obstacle course packed with over 100 natural and man-made challenges — from crawling and climbing to wading through mud and water.
Why Choose The Nuts Challenge?
- Run solo, with a team, or for charity – it’s up to you.
- Choose between a 5K or 10K race, or test yourself with multiple laps.
- Accessible to all fitness levels – from beginners to elite OCR athletes.
- Created and run by Wayne Monkman, a pioneer in UK OCR with 25+ years’ experience.
- Operated year-round on a single, professionally maintained course – no pop-up fields here!
Unlike other mud runs or pop-up races, Nuts is “old school” OCR at its best – permanent, proven, and packed with obstacles that keep you coming back year after year! Check your grit against our exclusive Nuttie Scale to find your challenge level.
What to Expect: Mud, water, trail running, walls, cargo nets, tunnels, and more! A true test of endurance, strength, teamwork, and mindset, or just for fun! The UKs oldest, most established Obstacle Race!
Whether you’re searching for a muddy obstacle run near London, training for a Spartan-style challenge, or just want a fun day out getting dirty — The Nuts Challenge is the one to beat.
Ready to get muddy? Book your place now and take on The Nuts Challenge – a legendary UK obstacle race you’ll never forget.
Go Nuts at The Nuts Challenge, the heart-pounding Assault Course set near Dorking in the beautiful Surrey countryside! Unlike others, our course is permanent and set up all year round making the best use of the natural terrain plus our unique Nuts obstacles!
Fancy something Tough & Muddy? Take on The Nuts Challenge – You won’t regret it!
Nuts Challenge gives you excellent value:
- Cheaper than the big brand obstacle races
- More obstacles than expensive pop-up races
- Free Key Drop
Race with your Mates, Team, Solo or for Charity
The Nuts Challenge welcomes you to a Challenge like no other. With mud trenches, water obstacles, climbing and crawling obstacles, tunnels and much more on our army style assault course that will push you to the limits! Our course updates every year with new layouts and new obstacles so even if you have done The Nuts Challenge before there’s always more to experience!
Ready to take on the challenge? Visit our Booking page, secure your spot, and gear up for a Nuts Challenge you’ll want to relive over and over again. The course may be fast, but the memories will live forever!