Hours Of Operations GNC Illinois Decatur GNC Hours of Operation and Locations in Decatur, IL 4.9 - 150 votes 1 Locations in Decatur GNC Hours Category: Beauty & Health GNC - Decatur, IL 62521 4705 e Maryland Street(217) 864-0323 View Store Details Explore DecaturView More Apparel Sam's ClubTJ MaxxRoss Dress for LessKmartBig Lots Sports TargetColemanCapital StoresFleet Feet SportsFrank's Sports Shop Jewelry Sam's ClubHobby LobbyCatoGucciAvon Recommend For You Cotton on Bally Total Fitness Eastern Mountain Sports Trader Joe's The Athlete's Foot Diane's Beachwear Bottega Veneta Hanna Andersson Louis Vuitton Sportsman's Warehouse