India, May 23 -- Train travel is all about sitting back and settling in. Its greatest luxury is space and time: no middle seats, generous legroom, and nowhere you need to be except by the window, watching the landscape.

So why cut that short? For travelers drawn to the calm and rhythm of the rails, long-distance train travel is the only option. And when it comes to the longest train rides in the U.S., travelers should look to Amtrak, the nation's passenger railroad.

"Traveling with Amtrak offers a relaxed, scenic, and comfortable alternative to flying or driving," said Jason Abrams, the senior PR manager of Amtrak. "Our customers can enjoy wide reclining seats, ample legroom, no middle seats, and picturesque windows to see some of the ...