National Fitness – Maryville National Fitness Maryville A 54,000 s.f. state-of-the-art health and fitness center A 54,000 s.f. state-of-the-art health and fitness center, built from the shell of an existing, abandoned shopping center. Location: Maryville, TN Owner: John Captain Contractor: Merit Construction George Ewart2017-07-27T16:01:07+00:00