Hours Of Operations Rainbow Maryland Gaithersburg 20877 Rainbow Hours of Operation and Location in Gaithersburg, MD 20877 4.2 - 102 votes 8400 Helgerman Ct, Gaithersburg, MD 20877 (301) 987-8889 Get Directions Rainbow Hours Category: Accessories Apparel Electronics Shoes Hours Hours may vary due to season or holiday reasons. For specific hours, please contact store directly. Map Explore GaithersburgView More Apparel Sam's ClubCostcoRoss Dress for LessBurlington Coat FactoryKmart Sports CostcoTargetSports AuthorityLA FitnessDick's Sporting Goods Jewelry Sam's ClubCostcoBurlington Coat FactoryLord & TaylorZales Recommend For You Salvation Army Journeys Express Chico's Lids Finish Line Party City Victoria's Secret Shoe Department Hot Topic