[Grampa Dave]

Speed
600

Kilometer per hour
=
372.823

Miles per hour

Formula
for an approximate result, divide the speed value by 1.609

[PIF]

Speed 600 Kilometer per hour = 372.823 Miles per hour
Formula for an approximate result, divide the speed value by 1.609

—
now subtract appropriate times for each station stop; at least in the US, the end result would be as fast or slower than driving.