The Club

About Underground Fitness

Thank you for inquiring about Underground Fitness, Stamford's first and only 24 hour fitness facility. Since its inception the goal of Underground Fitness has been to bring all the luxuries and amenities of a high priced gym and offer them at affordable prices. Underground has spared no expense to bring the latest cardio and strength equipment to our facilities. All of Underground's cardio equipment are equipped with state-of-the-art touch screens that are fully compatible with iPhone and Android devices. These screens offer countless entertainment options such as Netflix, Hulu, internet access, virtual scenery, virtual trainers, etc, making your cardio no longer feel like a chore. Underground also offers free WiFi in all of its facilities. When you join Underground you are given an electronic gym pass which grants all members 24-hour access to the facility and access to our free 24-hour tanning salon equipped with state of the art tanning beds.

Also, every member is guaranteed a spot in all of our free classes which take place multiple times daily. Our class schedule includes: yoga, zumba, spinning, body pump, boot camp, body sculpt, boxing, pilates, ripped, trx, etc.

Underground Fitness' flagship gym is located at 473 Hope St. in Stamford, CT.

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Our State-of-the-Art Equipment


Why Choose Us?

Underground is a 20,000 Sqft facility and is the largest 24 hour gym in Connecticut. The strength of Underground is it brings all the perks of a big gym chain, but in a private gym setting. Whether it be 3am on New Year's Eve, or 10pm on the 4th of July, Underground is open for all of its members.

Club Amenities

Our members are granted a key-card to Underground that allows them to access our facility 24 hours a day, 7 days a week.
Members receive exclusive access to Underground GroupX classes, from Zumba to Spinning. Visit our classes page for more information on our classes.
Undergound is equipped with state-of-the-art tanning beds, which can be accessed 24 hours a day.
Underground members have access to world-class personal trainers. Call us today to book your introductory training session.

Testimonials

Underground is easily the best gym in fairfield county. All of the equipment is brand new, the entire gym is extremely clean, and everyone that works there is really friendly. I tried a few other gyms in the area before finding underground, and would never go back anywhere else. The free classes are also amazing!