Information on GNC in Seattle, WA 98144 Outlet Note Regular Brands GNC Washington Seattle 329800 Rating 4.7 based on 97 votes Address 2707 Rainier Avenue South Seattle, WA 98144 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 - Seattle GNC Outlet - Seattle GNC Outlet - Seattle GNC Outlet - Seattle People Also Viewed