Our Memberships
Whether you’re cross-training or ready for a serious mind and body transformation, our monthly memberships keep you on track, month after month. With membership options for every budget, there’s a plan that fits your goals and lifestyle—no matter where you are on your fitness journey.
Unlimited Memberships
8 Class Memberships
4 Class Memberships
New to ONYX?
Buy your first class and get your second class on us! To qualify for this promotion, you must have never taken a class at any of our studios and live within three miles of the studio. Does that sound like you? Fill out the form to get started!
Class Packs
Got commitment issues? We get it. Our class packs let you enjoy ONYX on your terms, with no strings attached. Pay as you go, keep your boundaries, and save some cash while you’re at it.
About River North
Right in the heart of Chicago’s River North, our original heated reformer studio brings the heat! This ONYX location features two studios—one heated and one non-heated—equipped with infrared heaters reaching up to 95 degrees, dimly lit lighting for that unmatched vibe, and a sound system that keeps the beats bumpin’ all class long.
River North Amenities
Towels | Lockers | Showers | Metered Parking | Walkable to the CTA
Download the ONYX app
Discover everything ONYX has to offer right at your fingertips by downloading our app! Easily book classes, purchase memberships or class packages, view schedules, and even refer friends—all in one convenient place.
Stay connected and up to date by enabling notifications, so you never miss an update or special offer. Simply log in with your ONYX account to get started today!