Make the most of all we have to offer, experience multiple activities on the same day

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Training

Nuclear Fit – May 2026

Nuclear Fit is a 6km endurance event where you alternate...

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Rush

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race Format

The format consists of 4 groups: Individuals, Doubles, Pro and Relay waves. 6 x 1km trail runs alternating with a unique functional fitness station in between each run. The fitness stations are all located in the buzzing central arena called The Core.  The trail run will include 2 x 4ft hurdle obstacles.

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1

1km Run (excluding Storm)

Wheel Tyre Flip

Individuals, Double & Relay: 100M
Pro: 150M

Height/Weight of tyre:
women 3ft/63kg & men 4ft/83kg
mixed doubles 4ft/83kg

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2

1km Run (excluding Storm)

farmers urn hug

Individuals & Pro: 150M
Doubles & Relay: 125M

Weight:
women 24kg & men 30kg
mixed doubles 30kg

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3

1km Run (excluding Storm)

The Plough Pull

Individuals, Double & Relay: 125M
Pro: 250M

Weight:
women 37kg & men 70kg
mixed doubles 70kg

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4

1km Run (excluding Storm)

Milk Churn Carry

200M

Weight:
women 16kg & men 24kg
mixed doubles 24kg

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5

1km Run (excluding Storm)

Duck & Throw

Individuals, Double & Relay: 10 throws and 100m run with bag
Pro: 20 throws & 175m run with bag

Weight: 
Individuals, Double & Relay: women 22kg & men 32kg
Mixed Doubles: 32kg
Pro: women 24kg & men 32kg

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6

1km Run (excluding Storm)

Squat & Lift

Individuals Double & Relay: Women 75 reps & men 100 reps
mixed doubles: 100 reps
Pro: Women 125 reps & men 150 reps

Individuals

Nuclear Fit is made up of a 1km trail run alternating with a functional fitness station repeated 6 times.

Doubles

Nuclear Fit Doubles is made up of a 1km trail run alternating with a functional fitness station repeated 6 times, as a combined effort with your partner.

Relay

Nuclear Fit Relay is made up of a 1km trail run alternated with a functional fitness station repeated twice per person.

Pro Wave

Nuclear Fit Pro is made up of a 1km trail run alternated with a functional fitness station repeated 6 times. It features longer distances on stations 1, 3, 5 and 6.

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How to find Nuclear Fit

Find us

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.

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.