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 | Highest Point | Lowest Point |
| Great Northern Highway | WA | 3.195km (1,985mi) | 748m | 0.54m |
| Stuart Highway | NT-SA | 2.834km (1,761mi) | 731m | 9.32m |
| Eyre Highway | SA-WA | 1.675km (1,041mi) | 435m | 2.28m |
| Bruce Highway | Q | 1.652km (1,027mi) | 192m | 1.57m |
| Diamantina Developmental Rd | Q | 1.344km (835mi) | 426m | 72.6m |
| Anne Beadell Highway | SA-WA | 1,340km (832mi) | 478m | 161m |
| North West Coastal Highway | WA | 1.299km (807mi) | 287m | 4.98m |
| Mitchell Highway | Q-NSW | 1.105km (687mi) | 1.020m | 103m |
| Burke Developmental Road | Q | 1.079km (670mi) | 645m | 1.8m |
| Tanami Road | WA-NT | 1.053km (654mi) | 740m | 302m |
| Landsborough Highway | Q | 1.049km (652mi) | 476m | 166m |
| Barrier Highway | NSW-SA | 1.014km (630mi) | 609m | 70.5m |
| Trans Access Road | WA-SA | 993km (617mi) | 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.
