The average bus between National Harbor and Upper Marlboro takes 2h 4m and the fastest bus takes 1h 26m. There is a bus service every few hours from National Harbor to Upper Marlboro. The journey time may be longer on weekends and holidays; use the search form on this page to search for a specific travel date.
Buses run hourly between National Harbor and Upper Marlboro. The earliest departure is at 6:24 AM in the morning, and the last departure from National Harbor is at 11:45 PM which arrives into Upper Marlboro at 7:02 AM. All services require a transfer at Suitland+Bay K and take an average of 2h 4m. The schedules shown below are for the next available departures.
Arrives next day


9h 24m • 2 changes
Arrives next day


7h 43m • 2 changes


1h 28m • 2 changes


1h 28m • 2 changes


1h 48m • 2 changes


1h 38m • 2 changes


1h 28m • 2 changes


1h 28m • 2 changes


1h 48m • 2 changes


1h 38m • 2 changes
Want to know about travelling from National Harbor to Upper Marlboro? We have put together a list of the most frequently asked questions from our users such as: What is the cheapest mode of transport? What is the quickest option? How much do tickets usually cost? and many more.
No, there is no direct bus from National Harbor to Upper Marlboro. However, there are services departing from National Harbor station and arriving at Upper Marlboro station via Suitland+Bay H. The journey, including transfers, takes approximately 2h 4m.
National Harbor to Upper Marlboro bus services, operated by Washington Metropolitan Area Transit Authority, depart from St George Bl+Waterfront St station.
National Harbor to Upper Marlboro bus services, operated by Washington Metropolitan Area Transit Authority, arrive at Old Marlboro Pike at Marlborough Way station.
The distance between National Harbor and Upper Marlboro is 22.4 km. The road distance is 33 km.
You can take a bus from St George Bl+Waterfront St to Old Marlboro Pike at Marlborough Way via Suitland+Bay K and Donnell Drive at Pennsylvania Avenue in around 1h 49m.