Onyx Fitness in Bellmore, NY is the place where nobody sweats the small stuff or the big stuff, we just like to SWEAT! If you’re tired of working out in subpar facilities that care more about promotions and fees than their existing members, Onyx Fitness is the place for you.

Our app allows you to check into our facility so you never have to worry about misplacing your entry key again.

Use our Class calendar to stay on top of all the amazing classes that we offer at Onyx. We have a large range of classes including boxing and kickboxing, cardio training, strength training, private coaching, and more.