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Tales from our trails: keep up to date with all of our latest news and any insight we may have into the world of fitness, OCR racing and outdoor adventures!
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Ditch the ordinary and celebrate outdoors with obstacle courses, high ropes, zip lines and adventure-filled birthday parties in Essex.
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Take a look at some of the top activities on offer at Nuclear Essex.
If you’re looking for a challenge, a bit of adventure and a lot of mud, Nuclear Rush is the perfect event to add to your calendar.
As hybrid fitness racing grows in popularity, Nuclear Fit offers a tougher, more accessible outdoor alternative — combining trail runs, functional fitness stations and real competition without the high costs.
In this guide, we break down how to train effectively, from building your running base to mastering workouts under fatigue, so you can arrive on the start line ready to perform
We’re honoured to have won both Business of the Year and Customer Service Award at the Brentwood Chamber of Commerce Awards 2025! This incredible recognition celebrates our team’s passion, dedication, and commitment to delivering outstanding outdoor experiences across all of Nuclear Essex.
More than 1,000 competitors descended on Kelvedon Hatch this September for Nuclear Fit’s largest event to date. What began as a small local challenge has grown into one of the UK’s most exciting and inclusive fitness races — a true celebration of strength, community, and the unstoppable Nuclear spirit.
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.
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