How do I get from Dulles International Airport to downtown Baltimore by public transportation?

How long does it take? How can I get to Johns Hopkins University from inner harbor?



I've heard a lot about downtown Baltimore being an unsafe area.. Around what time would it be unsafe to roam around alone?How do I get from Dulles International Airport to downtown Baltimore by public transportation?
At Dulles you can take the Washington Flyer Bus to go to the metro.

It will drop you off at West Falls Church Metro Station (orange line), get on the line heading toward New Carrolton.

Get off the orange line at Metro Center and take the Red Line heading toward Silver Spring or Glenmont.

Exit the Red Line at Union Station.

Take the MARC Train (Penn Line). You can ride it all the way in to Penn Station in Baltimore or get off in West Baltimore. I'm not sure which is closer to the University.How do I get from Dulles International Airport to downtown Baltimore by public transportation?
Baltimore inner-city is perfectly safe. It is the rural area you want to avoid. You could probably hop on the metro, or Fly Bus.