The dimensions seem to be from another world, lol:
> 4730 m – United States — The Kansas City Southern Railway regularly runs between Kansas City, MO and Shreveport, LA
> 3658 m – United States – Trains are limited by air brake capability. electronically controlled pneumatic braked (180 wagons) – AAR Standard S-4200.[15]
Meanwhile, ordinary German trains are limited to 740m (Europe wide/UIC limit: 750m) and single-stack operation because of overhead power lines.
On the other side, the US has a lot of space that can be devoted to something like classification yards - the longer the train, the longer the yards have to be.