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Locations

Flatiron

308 Park Avenue South, New York

Get strong this summer with our Strong for Summer Package ($500 value)!

Our Flatiron Fitness Club

Discover the ultimate fitness destination at our newest gym in Flatiron NYC. Located in the iconic One Madison building on 23rd Street and Park Avenue South, this luxurious 60,000-square-foot fitness club spans four floors and offers top-of-the-line fitness experiences. As a vibrant addition to the Park Avenue gym scene and the Madison Square Park neighborhood, we provide state-of-the-art equipment, a large members lounge + co-working space, community events, and more. Join us at Chelsea Piers Fitness and elevate your workout routine in the heart of Flatiron NYC.

Boutique Classes

With six studio spaces for group fitness spanning across two floors, including an infrared studio for heated classes, our Flatiron club offers over 120 classes per week in a variety of modalities all throughout the day. Whether you're interested in Yoga, Barre, Pilates Mat + Reformer, Cycling, Running, Strength + HIIT, our expert instructors will provide you with a best-in-class group fitness experience.

Strength

Our Flatiron club features a fully stacked strength floor with plate-loaded and free weights, kettlebells, Olympic platforms, and a massive 4,000-square-foot multi-functional turf with TRX, boxing bags and more.

Cardio

Looking to get your heart rate up? Our cardio floor overlooking 23rd Street has a fleet of Woodway and Life Fitness equipment, plus a variety of connected fitness options including Peloton bikes exclusively for member use. Stretch before and after your workout on our 1,700-square-foot functional turf.

Luxury Amenities

We take recovery almost as seriously as we take our workouts at Chelsea Piers Fitness. So, we did not spare the details when we designed the amenity spaces in our Flatiron club. Relax in our traditional Sauna and Steam Rooms, recover in our co-ed contrast therapy suite with Cold Plunges and an Infrared Sauna, or feel refreshed in our luxury locker rooms complete with Malin + Goetz products - whatever you choose.

Member Lounge

Community is our calling, and our Member Lounges are the centerpiece of every club we build. At our Flatiron club, you will enjoy an expansive 6,000-square-foot Members Lounge with soaring 19-ft ceilings and floor-to-ceiling stunning stained-glass windows. Plus, you can get some work done in between your workouts with our co-working tables and privacy booths. Grab a smoothie at our in-club cafe, Canteen, or stay for a Member Event curated with local businesses + figures from the surrounding community. We can’t wait to meet you.

Babysitting

Babysitting services are available at our Kids Clubhouse for children of members ages 3 months and up. Members can purchase and book babysitting sessions easily in the app.

Corporate Partnerships

We have corporate partnerships available for companies both small and large - simply get in touch with our team to learn more! Employees who work within the One Madison building have a private club entrance, plus qualify for exclusive membership benefits.

Exclusive Membership Offer

Exclusive Membership Offer

Join Now

Get strong this summer with our Strong for Summer Package ($500 value) plus get Zero Initiation Fee when you join today.

For a limited time only. Some restrictions may apply.