ABOUT US
At The Den, we’re more than just a gym—we’re a community built on strength, smart training, and injury-free progress. Our expert coaching ensures you move well before you move heavy, creating a space where hard work meets purpose. From couples and parents to anyone serious about long-term health and strength, we’re here for those who value quality coaching over cheap memberships. No ego-lifting. No reckless workouts. Just structured, high-energy training that delivers real results.
As an Official HYROX Training Club, we offer specialised HYROX programming, classes, and PFT (Physical Fitness Test) events designed to help you build true functional fitness and prepare for the global race format. Whether you're training for your first event or trying to hit a personal best, our HYROX classes are integrated seamlessly into our coaching philosophy—focused, progressive, and performance-driven.
What sets us apart is our unwavering commitment to movement quality and long-term progress. We don’t believe in quick fixes or mindless suffering—just effective, well-coached training that challenges you while keeping you safe. Whether you're stepping into the gym for the first time or looking to level up, The Den is where you’ll find expert guidance, a supportive community, and a training approach that actually works.
If you’re ready to train smart, push limits, and be part of something better—welcome to The Den.

Offering a variety of cross training and HYROX classes and workouts!

The Cafe LA, our resident coffee spot will service all your needs including equipment!

Tailored workouts set out to assist you in achieving your fitness and physical goals!

Structured workouts, so that you don't need to worry, ever!
OUR COACHES
Our coaches have been in the fitness profession for over a decade and competed at the highest levels across a variety of disciplines.

CALVIN
VAN DER MERWE
Calvin Van Der Merwe has coached functional fitness for over 15 years, competing at the highest level in Cross Training and National Weightlifting. As head coach, he is passionate about helping individuals and families build strength, improve health, and thrive in a community focused on smart training.

MARIKE
HARTMAN
I've been passionate about sports since childhood and started CrossFit in 2015 to stay fit for hockey. Over time, it became my true passion, leading me to rank 13th in Africa in the 2025 CrossFit Open. I take great pride in helping others discover and excel in the sport that has profoundly shaped my life.
WE OFFER A VARIETY OF PACKAGES TO ACCOMMODATE YOUR NEEDS!
We offer specialised packages for students with a valid student card as well as verified alumni and current Sandringham High School students.
Click Here for further details.
LET'S HAVE A CHAT!
OUR ADDRESS
Sandringham High School
499 George Avenue, Sandringham, Johannesburg, 2192