[OhioGuy]

I believe it's estimated to take approximately 50 minutes from Dulles to Metro Center.

For comparison,

It's approximately 40-45 minutes from O'Hare to Washington & State in downtown Chicago via the Blue Line.

It's approximately 40-42 minutes from Newark Airport Rail Station to Times Square, New York via New Jersey Transit & the subway (not counting the time it takes to use AirTrain from the airport to the train station).

It's approximately 32 minutes from the SFO BART station to the Embarcadero station in downtown San Francisco.

It's approximately 50 minutes via Link Light rail from SeaTac airport to Westlake in downtown Seattle.

Even though it'll take a while to get there, I'll still be happy to have the train. Having a one seat ride there still rates above taking Metro to West Falls Church and switching to the Washington Flyer bus.