Hours Of Operations GNC California National City GNC Hours of Operation and Locations in National City, CA 4.9 - 150 votes 1 Locations in National City GNC Hours Category: Beauty & Health GNC - National City, CA 91950 3030 Plaza Bonita rd, Suite 2282(619) 267-8557 View Store Details Explore National CityView More Apparel Ross Dress for LessBig LotsH & MJCPenneyFactory 2-U Sports TargetLA FitnessSkechersZumiezLids Jewelry ZalesKay JewelersCharming CharlieCharlotte RusseDaniel's Jewelers 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