The Southwest Chief runs Superliner train sets. Trains typically consist of two P40 or P42 locomotives, a baggage car, three or four sleeper cars, a dining car, sightseer lounge and three coach cars.
Two Amtrak trains run this route on a daily basis with one starting off early in the morning and the second one in the late afternoon.
We chose the late afternoon schedule because it gave us the opportunity to be in "daylight" when traversing some of the more scenic areas of the country.