JJK Fitness

JJK Fitness JJK Fitness offers Personal training, Small Group PT, Crossfit, Hyrox and a range of classes for all.
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JJK Personal Trainer offers 1:1, 2:1 personal training & group exercise classes in your local area

31/03/2026
26/03/2026

Meet Oscar


“Even after a tiring day at school I still want to come to the gym and do what I love most”

The next generation of functional fitness athletes is here at JJK…

Join Oscar and many other kids at our youth classes, every Monday, Tuesday, Wednesday and Thursday at 17:00

See you at the gym

24/03/2026

HYROX SIMS AT JJK

We asked our members this question below and we got lots of different answers, volume up 🔉😂

“What do you love about the Hyrox sim the most”

Join us at JJK Fitness for our next HYROX Simulation on Saturday 18th April 🏁

Expect:
✔️ Race-style format
✔️ Real HYROX stations
✔️ Competitive atmosphere
✔️ All fitness levels welcome

Spots are LIMITED, book now via the website

📍 JJK Fitness
📅 Saturday 18th April
⏰ 9:45-13:00

🎥

17/03/2026

COMMUNITY

We asked our foundation members “what sort of gym is JJK” 🔉

Every member has their own story. Different ages, different backgrounds, different goals — but one shared space where we lift each other up.

Our foundation members are the heart of this community, showing that fitness is for everyone. 💪

Come and join the family, try our free 7 day pass.

This is more than a gym.
This is a community.

16/03/2026

CrossFit open 2026

Our members took on 26.3 and this is what they said… 😂

🎥

10/03/2026

Meet 🇬🇷

“I would describe the JJK community as very friendly, welcoming and everyone looks after each other”

10/03/2026

HYROX RACE DAY SIMULATION

Next up: Saturday 14th March
10:45-13:45

The deadline to sign up is Wednesday 11th March 21:00

Categories:
- male open
- female open
- male pairs
- female pairs
- mixed pairs

Our unique facilities allow us to create a full HYROX experience like no other.

We transform our gym into our very own HYROX venue.
HYROX is a global event and we are committed to running this event every month.

Sign up now using the website

🎥

05/03/2026

Meet .nicole

“For someone who is thinking about joining JJK, I would say just do it. I can’t imagine life without it now”

More than just a gym…

24/02/2026

Just a normal Tuesday night at JJK HQ

We asked our members to describe JJK in one or two words…

Savage, dirty, easy, hard and the list goes on 😂

No place like home 🏠

MORE THAN JUST A GYM!

Address

Unit 3, 28 Rucklers Lane
Kings Langley
WD48AU

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Our Story

Personal Training, Small Group Personal Training, Group Exercise Classes, Gym Grub Meal Prep & More