Australia is a huge country, so it is common to travel long distances with epic, but long roads. With the population centres separated by vast distances, some roads are so long that they have trivia signs to keep drivers alert and reduce crashes and fatalities.
| Road | States | Length (km) | Length (mi) | Highest Point | Lowest Point |
| Great Northern Highway | Western Australia | 3.195 | 1,985 | 748m | 0.54m |
| Stuart Highway | Northern Territory-South Australia | 2.834 | 1,761 | 731m | 9.32m |
| Eyre Highway | South Australia-Western Australia | 1.675 | 1,041 | 435m | 2.28m |
| Bruce Highway | Queensland | 1.652 | 1,027 | 192m | 1.57m |
| Diamantina Developmental Rd | Queensland | 1.344 | 835 | 426m | 72.6m |
| Anne Beadell Highway | South Australia-Western Australia | 1,340 | 832 | 478m | 161m |
| North West Coastal Highway | Western Australia | 1.299 | 807 | 287m | 4.98m |
| Mitchell Highway | Queensland-New South Wales | 1.105 | 687 | 1.020m | 103m |
| Burke Developmental Road | Queensland | 1.079 | 670 | 645m | 1.8m |
| Tanami Road | Western Australia-Northern Territory | 1.053 | 654 | 740m | 302m |
| Landsborough Highway | Queensland | 1.049 | 652 | 476m | 166m |
| Barrier Highway | New South Wales-South Australia | 1.014 | 630 | 609m | 70.5m |
| Trans Access Road | Western Australia-South Australia | 993 | 617 | 407m | 95.6m |
Road length is an approximation only. Some roads are split into more than one part because they pass through a place where the road is differently named.
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