About Nuclear Fit
Nuclear Fit is the ultimate outdoor fitness competition, designed to test you physically and mentally. The race format combines six 1km trail runs with intense fitness stations, including sled pulls and tyre flips. It’s the perfect test of strength, endurance and determination, all set in the great outdoors. Take on Storm without the running, share the challenge in a three-person Relay, step up to Pro for an even tougher test, or get children aged 9–15 involved with Nuclear Fit Rookies. It’s a fresh alternative to the traditional fitness competition.
9th May 2027
We have a variety of formats at each event, for a variety of ages and abilities. The fitness stations are all located in the buzzing central arena called The Core. The trail run will include 2 x 4ft hurdle obstacles. Waves start every 10 minutes and you have 2 hours to complete the race. Your chip timing tag will record your overall time and the split for each functional fitness station and each 1km run.
FIT
Nuclear Fit is made up of a 1km trail run alternating with a fitness station repeated 6 times. You can
race as an individual, double or test your limits with pro.
STORM
45 minutes to complete as many of the functional fitness stations back to back as you can, with zero running involved. Race as an individual or double.
Relay
A race designed for teams of three. Two stations and two runs per person. How you split the runs and functional fitness stations is up to you. A great introduction race.
ROOKIES
For young athletes, aged 9-11 and 12-15. They will tackle six trail runs, alternating with six functional fitness stations. Lighter weights and shorter distances than the adult race.
WHEEL TYRE FLIP
Distance:
Individuals/Doubles/Relay: 100M
Pro: 150M
Weight:
Women Individual/Doubles: 3ft/63kg
Men Individual/Doubles: 4ft/83kg
Mixed Doubles: 4ft/83kg
The competitor starts behind the line. To flip the tyre they need to get into a deep squat, place hands under the tyre, maintain a flat back with their head up and power up through the legs and hips. They can use their knee to assist with the flip. They can stop to rest. They complete this workout once the competitor and the whole tyre have crossed the line.
FARMER URN HUG
Distance:
Individuals/Doubles/Relay/Pro: 125M
Weight:
Women Individual/Doubles: 24kg
Men Individual/Doubles: 30kg
Mixed Doubles: 30kg
The competitor has to pick the urn up from the station, remembering to keep their core engaged. The carry begins when they cross the start line. The urn must be kept close to their chest and they can put it down at any time. The carry is complete once the competitor and the urn cross the finish line.
PLOUGH PULL
Distance:
Individuals/Doubles/Relay: 125M
Pro:Â 250M
Weight:
Women Individuals/Doubles: 37kg
Men Individuals/Doubles: 70kg
Mixed Doubles: 70kg
The competitor places the reins over their shoulders and they must stand behind the line prior to starting. They must remain standing at all times, hands and knees are not allowed to touch the ground. They move the plough (sled) by pulling and moving forward. They can stop to rest. The pull finishes once the competitor and the plough cross the finish line.
MILK CHURN CARRY
Distance:
Individuals/Doubles/Relay/Pro: 200M
Weight:
Women Individual/Doubles: 16kg
Men Individual/Doubles: 24kg
Mixed Doubles: 24kg
The competitor has to carry one milk churn in each hand with both arms fully extended. The carry begins when they cross the start line. They can put the milk churns down to rest. The carry is complete once the competitor and the milk churns cross the finish line.
DUCK AND THROW
Distance:
Individuals/Doubles/Relay: 10 throws & 100M run with bag
Pro:Â 20 throws & 175M run with bag
Weight:Â
Women Individual/Doubles: 22kg
Men Individual/Doubles: 32kg
Mixed Doubles: 32kg
Pro Women: 24kg
Pro Men: 32kg
The competitor picks up a bag and runs 40m to the functional fitness station. They will then be required to throw it over the bar without any assistance, they then duck under the bar and pick up the bag and move forward into the next designated lane. There are 10 throws in total. They can stop to rest. The competitor picks up their bag to run 40m back towards the finish line. The workout is complete once they cross the finish line.
Squat and Lift
Reps:
Women Individual/Doubles: 75 reps
Men Individual/Doubles: 100 reps
Mixed Doubles: 100 reps
Pro Women: 125 reps
Pro Men: 150 repsÂ
The competitors start by sitting down on the box provided and picking up the handles. The lift begins when they stand up and raise the rack above their head, locking their arms out, this counts as one rep. They must then sit back down onto the box. They can rest at any time standing or sitting. Each correctly completed rep will be counted by an adjudicator. The lift finishes when the competitor completes all the reps.
Nuclear Fit is available for private hire — perfect for bespoke events, team challenges, exclusive training sessions, or groups wanting the full course all to themselves.
Included in this is your own dedicated instructor to guide your group, offer top tips, and help you get the most out of every fitness station.
To discuss your private hire requirements, get in contact via the button below.
Need a little preparation ahead of Nuclear Fit? Don’t worry, we have specialised classes designed to train for Nuclear Fit.
This is an opportunity to try out the stations, breaking down techniques and working on your transitions so that you can perform your best on race day.
A gift voucher for Nuclear Fit makes a really unique and memorable present.
Select a race or value and give the gift of fitness.
Email fit@nuclearessex.com
The events were really well organised and very enjoyable (and tiring) to take part in; and the training days were really helpful in getting to practice some of the stations and get some race like preparation done. I will definitely be back for both the training days and the events in 2027.
Steve Ward
Can't wait to be back again.
Have been doing Nuclear Fit for the past 2 years. Have done all three dates both years, doing Nuclear Fit, Storm and Fit Pro.
This place knows how to run a fitness event, smooth registration, top quality equipment and the marshals and judges are another level, always so supportive and cheerful, encouraging every single person that toes the start line.
Anonymous
I love the Nuclear fit races!
It’s a great, fun and accessible race for everyone from beginners to those that compete often, everyone is catered for.
Very well organised and safe, communication is great and the volunteers are so nice! Would 100% recommend doing!
Sarah Weston
Just the best experience and vibe
Organisation always on point and an awesome day out with everyone concerned creating such a fab atmosphere. I love the outdoor concept and find the overall race a great challenge. Sam and the team are always very helpful and supportive and make for a amazing day Highly recommended.
Anonymous
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How to find us
Nuclear Fit 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.