The Bicentennial National Trail (BNT), originally known as the National Horse Trail, is one of the longest multi-use, non-motorised, self-reliant trails in the world, stretching 5,330 kilometres from Cooktown, Queensland, through New South Wales and the Australian Capital Territory to Healesville, 60 km north-east of Melbourne. This trail runs the length of the rugged Great Dividing Range through national parks, private property and alongside wilderness areas. The BNT follows old coach roads, stock routes, brumby tracks, rivers and fire trails. It was originally intended for horses, but is these days promoted also for cycling and walking, though it is not yet entirely suited to these two activities.

A trail, also known as a path or track, is an unpaved lane or a small paved road not intended for usage by motorized vehicles, usually passing through a natural area. In the United Kingdom and Ireland, a path or footpath is the preferred term for a pedestrian or hiking trail. The term is also applied in North America to accompanying routes along rivers, and sometimes to highways. In the US, the term was historically used for a route into or through wild territory used by explorers and migrants. In the United States, "trace" is a synonym for trail, as in Natchez Trace.