MyGym Alexandria/Kingstowne meet up details. 5810 Kingstowne Town Center Suite 110 Alexandria. Conveniently located off S. Van Doorn and Kingstowne Blvd. OUTDOOR SHOES may not be worn on the padded flooring. Please wear outdoor shoes to the gym and be sure your workout shoes are dry, clean and free from any debris prior to getting on to the flooring. On nice days we will hold classes outside, so be sure to have outdoor workout shoes on hand at all times! Thank you for your understanding - we strive to keep all locations in better condition than when we arrive.