What's on
As well as our regular adventures, we also have a variety of special events taking place throughout the year. Take a look below at a few highlights of what we have on.
Easter 2K Obstacle Run
Age 6+
90 Minutes
All abilities
Easter Weekend
Take on the 2K woodland obstacle run, designed with a relaxed, fun vibe and perfect for ages 6+. Your designated instructor will be on hand with top tips to help you conquer the obstacles. Put your balance to the test with a classic egg & spoon race to the finish line and we guarantee muddy feet by the end!
After the run, wind down by our roaring fire pit. Don’t forget to bring some marshmallows for toasting and enjoy a well earned treat together.
Easter fun at it’s muddy best.
- Hot washdowns and changing rooms available.
- Hosted by friendly and qualified instructors.
- Fire Pits available, don't forget your marshmallows.
- Change of clothes and shoes and a black sack for muddy clothes.
£25 Per Person
£80 Per Family of 4
(Price Includes Booking Fee)
High Ropes
Age 6+
Approx. 2 hours
Ready to leave the ground behind? Our High Ropes adventure is a thrilling, sky-high experience that will test your nerves, challenge your balance, and leave you buzzing with adrenaline.
You’ll navigate suspended bridges, swinging platforms, rope crossings, and zip wires up to 8 metres above the forest floor as part of our High Ropes course.
Whether you’re conquering fears or chasing fun, every step is a chance to prove what you’re made of.
- 3 different levels
- 6 different courses
- 40m long zip wire
- Over 70 Aerial obstacles
Nuclear Rush
Age 4+
Approx. 2 Hours
9th & 10th May 2026
Prepare for the ultimate muddy obstacle course race at Nuclear Rush. Choose your challenge on our 6km or 12km courses; there’s over 70 obstacles on the 12km course, including our famous Death Slides and para-plunge zip lines. Our exciting courses are designed to test every fitness level, whether you’re a beginner, a seasoned mud racer, an individual, Rookie or family. This event is a must-do race!
- 40+ obstacles
- Timing Chips
- Survivor Medals for everyone
- Water obstacles
(Includes Booking Fee)
Under 16 year olds must be accompanied by a paying adult
Nuclear FIT
Age 16+
APPROX. 1 Hour
10th May 2026
Nuclear Fit is the ultimate outdoor fitness race. This dynamic event combines six 1km trail runs with powerful workout stations. It’s a full-body test that blends endurance and functional fitness in one exhilarating race. Nuclear Fit is the perfect goal to train for, way to challenge yourself and discover what you’re truly capable of.
- Chip timing
- Trophies for 1st, 2nd and 3rd male and female winners
- Finishers medal
- Free for spectators and free parking
(Includes Booking Fee)
Mud Tribe
Age 4+
Approx. 2 Hours
5th September 2026
We ramp up the fun on the 5km course, with even more mud, foam and laughs! Make some muddy memories for your Tribe to treasure.
Join us for a day of excitement, encouragement and lots of fun!
With achievable fun obstacles that will have you smiling and laughing all the way round.
Following it’s popularity in our inaugural 2025 event we’ll also have a female only Mud Tribe Sisters start time between 12:30pm – 1:30pm.
- Wide variety of obstacles - no upper body strength required!
- Go at your own pace; no chip timing.
- Hot wash downs and changing rooms at the end of the course.
- Water obstacles but no full water submersion.
(Includes Booking Fee)
Under 14 year olds must be accompanied by a paying adult
Secret Nuclear Bunker Tour
All Ages
Approx. 1 Hour
Take a step back in time to the Cold War era with a visit to the Kelvedon Hatch Secret Nuclear Bunker. This massive underground complex is the biggest and deepest Cold War bunker open to the public in the Southeast of England.
As a Regional Government Headquarters, the bunker would have housed hundreds of staff, including Prime Minister Margaret Thatcher. Our self guided audio bunker tour is a fascinating opportunity to explore this unique piece of history and discover the secrets that would have unfolded in the event of a nuclear war.
- Immersive Self guided tour with handsets
- Discover real life artefacts from the Cold War period, and experience what life would have been like at the Essex Secret Bunker.
- Discover the authentic underground command centre – where real plans were made for life after a nuclear strike.
- Younger visitors can explore this unique era of our history through our engaging dressing up area.
(Includes Booking Fee)
Under 14 year olds must be accompanied by a paying adult
Explore all our activities...
Step out of the routine and into the thrill of award-winning obstacle course action at Nuclear Races.
Challenge yourself with Nuclear Fit, an outdoor fitness race that tests your strength, stamina, and determination.
Get muddy with Mud Tribe, a 5k obstacle course run which is suitable for all abilities.
Uncover Cold War secrets at the iconic Kelvedon Hatch Secret Nuclear Bunker.
Take adventure to new heights at Nuclear Adventures, featuring high ropes, zip lines and thrilling target sports.
Get outdoors and challenge yourself at Nuclear Wild Forest with thrilling obstacle courses and axe and knife throwing.
How to find us
Nuclear Essex is located in Brentwood, Essex just 15 minutes from the A12, M25 and M11.
By Train and taxi, we’re just 15 minutes from Brentwood station (on the mainline from Liverpool St) or 15 minutes from Epping Underground station.