Nuclear Races
See all obstacle courses provided by our trusted partner, Run For Charity
The UK’s Most award winning muddy obstacle course
Nuclear Races, Kelvedon Hatch, Ongar Road, Brentwood, Essex CM15 0LA
Escape the everyday and get stuck into our award-winning muddy obstacle course at Nuclear Races, Essex’s best mud run. From thrilling slip and slides and the iconic Travelator to mud pits and cargo nets, every obstacle delivers mud, fun and a genuine sense of achievement. Whether you’re a complete beginner, seasoned racer, endurance runner, adult or child, there’s a race for everyone.
Rush 12k – Saturday, 9th May, 2026
Nuclear Races, Kelvedon Hatch, Ongar Road, Brentwood, Essex CM15 0LA
Double the distance, double the challenge. Test your limits on the full 12km course and every world-class obstacle.
Taking you deep into muddy farmland, woodland and lakes on the imposing terrain of the Secret Nuclear Bunker Estate in Essex, the 12km races offers over 70 obstacles and a true endurance feel for those ready to push their limits.
With chip‑timing, high‑quality, achievable natural and man‑made obstacles and no penalty system (you can attempt as many or as few obstacles as you like), it’s built for both seasoned racers and adventurous newcomers alike.
Rush 6k – Saturday, 9th May, 2026
Nuclear Races, Kelvedon Hatch, Ongar Road, Brentwood, Essex CM15 0LA
The 6 km course takes you through muddy farmland, woodlands and lakes, and is complete with approximately 40+ obstacles to test your determination, agility and adventurous spirit.
Set in the heart of the Secret Nuclear Bunker Estate in Essex, and while challenging, it’s open to participants aged 13+ (adult accompaniment required for 13 – 15 year olds) and welcomes all fitness levels.
You’ll be chip‑timed and receive a finishers medal, but there’s no penalty for skipping obstacles, meaning that you can enjoy the experience and take your race at your pace.
Nuclear Races – Fit – Sunday, 10th May, 2026
Nuclear Races, Kelvedon Hatch, Ongar Road, Brentwood, Essex CM15 0LA
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.
Nuclear Fit is the ultimate outdoor fitness race to test your body and mind.
Across six 1km trail runs, you’ll take on a series of high-intensity workout stations, all designed to test your grit, stamina and determination.
It’s the perfect challenge for anyone looking to push their limits, enjoy the outdoors and experience fitness in a whole new way.
Step 1: Sign up for your place
If you haven’t already, grab your spot through our trusted event partner site. Hit the button below to get started then pop back here for your next steps!
Step 2: Set up your fundraising page
Time to kick off your fundraising! Create your JustGiving page and start sharing your story it’s quick, easy, and helps bring your challenge to life.
We love JustGiving because they’re one of our brilliant partners and they’ll help you make the most of every mile, step, or spin.
Step 3: Order your T-shirt and fundraising kit
Stand out and shout loud about your support with a free Magic Breakfast T-shirt!
Order your T-shirt today and look the part while raising awareness for Magic Breakfast. It’s the perfect way to show your support and help spread the word.
Step 4: Get ready for the big day!
That’s the admin sorted! Now it’s all about sharing your fundraising page, gathering those donations, and getting excited.
Thank you so much for going the extra mile for Magic Breakfast.
Every penny you raise means more children start their day with a full tummy and a bright future.
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