Information on GNC in Grayson, KY 41143 Outlet Note Regular Brands GNC Kentucky Grayson 327110 Rating 4.7 based on 97 votes Address 100 South Carol Malone Blvd. Grayson, KY 41143 Phone Hours may vary in different stores. For accurate hours, please contact each store directly. Suite643 Hours may vary in different stores. For accurate hours, please contact each store directly. Nearby GNC Outlet GNC Outlet - Ashland GNC Outlet - Cynthiana GNC Outlet - Hazard GNC Outlet - Georgetown People Also Viewed