Located at New Market Square, Onslow Fitness is the right choice if you’re looking for a full-service gym. Our 14,000 square foot Jacksonville gym is dedicated to making fitness accessible for every member and helping them achieve their fitness goals. Originally, “Onslow Spa” opened in 1981 featured the only steam room, sauna and whirlpool in the area. A broad range of strength, cardio, circuit, and functional training. In 1982, the pool was added and to this day, we have the only heated indoor saltwater pool in Jacksonville, NC. You might need to book to attend the activities.