Information on GNC in Belvidere, NJ 07823 Outlet Note Regular Brands GNC New Jersey Belvidere 325486 Rating 4.7 based on 97 votes Address 2 Upper Sarepta Road Belvidere, NJ 07823 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 - Blairstown GNC Outlet - Bedminster GNC Outlet - Bernardsville GNC Outlet - Bridgewater People Also Viewed