Here’s a couple of neat timetable/route diagrams for Interstate passenger rail services in Australia back in 1983. The first shows westbound services from Sydney, the other shows the corresponding return journeys.
Differing rail gauges and immense distances have always made interstate rail travel a difficult prospect in Australia, hence the paucity of services even 30-odd years ago (only three Sydney-Melbourne trains a day and just one daily Sydney-Brisbane service).