As a child, my family always went on holidays by train. Three destinations only - Sydney to the Queensland border, Sydney to Melbourne and Sydney to a small town in the west of NSW called Ivanhoe. We would travel on a steam train overnight and Mum insisted that we had a sleeper berth. I think she believed that the only proper way to sleep was lying down in a bed. The steam trains stopped at every town along the route to deliver bags of mail.
The next morning the steam engine would be replaced by a diesel one and the diesel fumes would make me feel sick. At the NSW Victoria border town of Albury we changed trains because of a difference in the rail gauges. We left the steam train and walked the length of the station to find our seats for the remainder of the journey. Albury station at that time was the longest in Australia, possibly the world.
Later, when I was a university student, I took a solo trip to Ivanhoe to visit relatives. This was the first time I had ever travelled alone and unchaperoned. My relatives arranged an extension of the holiday to Broken Hill, a major mining town close to the border with South Australia. I had studied geology that year and was very interested in rocks and minerals. I stayed in one of the town hotels, but being a minor (21 was the age of majority then) I could not enter the bar. The owners of the hotel were kind enough to grant me access to their living room where I was allowed to play records to amuse myself. I thought all my christmasses had come at once.
The return trip to Sydney was the longest rail journey that I had ever taken. My Ivanhoe relatives did not book me a sleeper berth so overnight I watched people enter and leave the train. At one stage the only other person in the compartment was a teenage boy. Mum would probably not have approved but what the eye doesn't see does not cause too much worry.
How long was this journey? In miles I don't remember, but I was able to read two novels in the train. One was George Orwell's 1984 and the other was Aldous Huxley's Brave New World. It was a 24 hour long train ride.