About this gym
Underground Fitness' flagship gym is located at 473 Hope St. in Stamford, CT. It 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. Underground has spared no expense to bring the latest cardio and strength equipment to its facilities, and every member is guaranteed a spot in free classes offered multiple times daily. Rated #1 gym in Fairfield County for 13 years in a row.
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