Use Amtrak.
Yes
To travel by train from Washington, DC to Charlottesville, you can take an Amtrak train from Union Station in DC to Charlottesville's Union Station. The journey takes about 2.5 to 3 hours, and tickets can be purchased online or at the station.
The most efficient way to travel from the metro into DC is by taking the metro train.
Travel south. (Southeast from Pittsburgh, South from Harrisburg/Gettysburg/York, and Southwest from Philadelphia!)
it is mostly used to travel for long distance and its cycle even it is costly
Train travel in the United States is not as well promoted in comparison to Europe as example. In America, airline travel is well promoted. Perhaps the railway corridor between NYC and Washington DC might be an exception.
Amtrak is not an efficient way to travel between Atlanta and Miami. You have to take a train to Washington, DC and then change to the train to your destination. It takes about two days. The Greyhound bus takes about 16 hours.
Atlanta, Georgia is about 639 miles from D.C. if you travel via Interstate 85. It takes about 10 hours and 51 minutes to travel.
To travel from Washington, DC to Manhattan, you can take a train, bus, or drive. The most popular and convenient option is to take an Amtrak train from Union Station in DC to Penn Station in Manhattan. The journey takes about 3-4 hours. Alternatively, you can take a bus from DC to Manhattan, which also takes around 4-5 hours. Driving is another option, but be prepared for traffic and parking challenges in Manhattan.
He took a special train from Philadelphia to Washington along the Amtrak tracks from 30 St. Station through Baltimore's Pennsylvania Station to Washington's Union Station.
It will take about eight hours driving time via Washington, DC and Philadelphia to cover that 475 miles.
There is no name. There is no single train you can take in the US to travel from NY to California. This takes a train from NY to Washington, DC, then to Chicago, then to Oregon, and then to California. At best, the train ride could be called "very long".