ONEHUNGA'S friendliest FITNESS box

Welcome to 312 Fortitude, Onehunga’s hub for not just fitness, but for friendship and a truly inclusive community. Here, we’re more than a gym – we’re a family, dedicated to supporting every member in becoming the best version of themselves, no matter where you’re starting from. Join us, and discover a place where everyone belongs and where your fitness journey is celebrated, step by step.

free 2-day pass!

There is no better way to find out about 312 Fortitude than to simply give it a try!

All fitness levels are welcome!

Paws of 312 Fortitude: Heartbeats & Pawprints calendar

Join Our Lifesaving Initiative

Make a meaningful impact with the "2025 Paws of 312 Fortitude: Heartbeats & Pawprints" calendar. Each month showcases beloved pets from our community, captured beautifully to add joy and warmth to your space all year round. Your purchase not only decorates your home or office but also supports our critical fundraiser for a lifesaving Automated External Defibrillator (AED).

Sudden cardiac arrests can happen without warning, and having an AED accessible is vital—it could literally save lives. By buying a calendar, you help us ensure a safe and responsive environment at 312 Fortitude. Your support is invaluable as we work together to protect every heartbeat in our gym community.

Purchase a Calendar, Save a Life

To become Onehunga's most welcoming and supportive gym, where everyone, regardless of their fitness level, feels part of a vibrant and inclusive community. Here, we celebrate every step of your fitness journey, offering a space to learn, have fun, and exceed what you thought possible for yourself.

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CLASS SCHEDULE

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WHY FORTITUDE?

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MEET OUR COACHES

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membership

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OUR CLASSES

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DROP IN

* BILLED MONTHLY

Membership

You may think that our prices are higher than typical gym memberships. You’re absolutely right, they are! But ask yourself this: what do you get from a typical gym membership? You pay to use the equipment, and in the case of some oversubscribed gyms you may need to wait for your turn to use such equipment! At 312 Fortitude, your membership includes professionally programmed workouts that are tailored specifically to your fitness capability!