rioVisit WebsiteGet Directions Details Amenities Details RIO is a lake front shopping dining and entertainment experience for the whole family located just off of I-270 in Gaithersburg, MD Hours See website for hours. Location9841 Washingtonian Blvd, Ste S1Gaithersburg, MD20878Get DirectionsContact Local Phone: 301-203-4187SocialFacebookTwitterInstagramYouTubeMapCapital Region Amenities Family-FriendlyFree ParkingPlaces NearbyAccommodationsCourtyard Rockville MarriottLearn MoreAttractions, Accommodations, & DiningMotel 6-Washington DC/GaithersburgLearn MoreAttractions, Accommodations, & DiningCourtyard by Marriott-RockvilleLearn MoreAttractions, Accommodations, & DiningDoubletree Hotel by Hilton–DC North/GaithersburgLearn MoreAttractions, Accommodations, & DiningExtended Stay America-Gaithersburg SouthLearn MoreSee More For Capital Region