Can any satellite train still be seen?
I can personally attest that the Starlink satellites are visible with the naked eye even after they have spread out, however they are quite dim - with apparent magnitudes near 5.5. Here is a brightness comparison drawn from a widefield capture where two Starlink satellites are can be seen (albeit barely) juxtaposed with another satellite with apparent magnitude near 3.

The region in which this was taken is Class 1 on the Bortle Scale and the entire 60-satellite train was visible, though only 4-5 were visible at any given time. In brighter regions the satellites would not be as readily visible. Furthermore, since they have such low orbits, they were only visible for ~105 degrees in the sky before they passed into Earth's shadow.