One Space. Two Paths.
One Goal.
Your Best Self.
Boundary Belfast is home to Boundary CrossFit and Boundary Apex - two unique training experiences under one roof.
A purpose-built facility where performance, progress and community come together. Whether you’re powering through CrossFit workouts or grinding through Apex conditioning sets, this is your place to grow stronger, fitter, and more confident. We offer a full timetable of CrossFit classes downstairs, with a dynamic range of classes also available in our upstairs Apex area. Upstairs we offer Hyrox, Burn, Build/Build & Burn classes.
Choose Your Path
What makes them different?
High-energy, coach-led group training combining strength, conditioning, and functional movements. Every session is scalable to your level, from beginners to seasoned athletes. Perfect if you want variety, challenge, and a proven method for building all-round fitness.
- CrossFit Programming
- Strength, conditioning & functional movements
- Scalable for all levels
- WODs, gymnastics, Olympic lifting & team workouts
Our boutique mezzanine training space for high-performance small group training. Classes are focused, progressive, and easy to follow — no CrossFit experience needed. From Hyrox-inspired conditioning to BUILD & BURN hybrids, Apex is all about targeted results.
- Boutique small group training space
- Hyrox-inspired endurance, strength & cardio
- No CrossFit experience required
- BUILD, BURN, hybrid classes & ladies-only sessions
Can I Do both Boundary Crossfit and Boundary Apex?
You don’t have to choose. If you want both Apex and CrossFit, pick an All Access membership and train across both programmes.
- Unlimited Apex and CrossFit classes
- Open Gym + BackRoom Recovery access
- Optional Unlimited Hot Yoga add-on (or choose the plan that includes it)
About Us
Boundary Belfast is more than just a gym — it’s a community. We’re home to two distinct training experiences under one roof: Boundary CrossFit, our long-standing strength and conditioning programme, and Boundary Apex, our boutique mezzanine space for high-performance small group training.
Our mission is simple — to help you become the best version of yourself through expert coaching, smart programming, and a supportive environment that makes training something you look forward to.
From our roots as Boundary CrossFit, we’ve built a reputation for high-quality coaching, well-structured programmes, and a welcoming, driven community. As our members’ needs evolved, so did we — expanding to include Boundary Apex, a space dedicated to Hyrox-inspired conditioning, functional strength, and accessible training for all fitness levels.
What they say about Boundary Belfast
contact us for more info
Have a question about memberships, classes, or getting started? We’d love to hear from you.
Our team is here to help – whether you want to join a class, try a Drop-In, or find out more about our facilities.