As an example, Darth Vader's flagship the Executor was 19km long. How did someone get from one end of the ship to another in any decent amount of time? The question assumes that there are accessible parts of the ship from end to end, and that a single person might have to go from end to end (as opposed to 'workers' just living in the general area that they worked in), but even a situation where they only have to travel 10km or so. Is there any evidence in either canon or Legends as to how people moved around these massive ships? I've only ever seen elevators for vertical movement, but how did they move from end to end?
This question is specifically about a Super Star Destroyer, but I suppose it can apply to any of the 'smaller' ships that are still massive in length, so if there is only an answer for a smaller ship, that would still be interesting.