Mountain trail

A trail is usually a path, track or unpaved lane or road, though the term is also applied, in North America, to routes along rivers, and sometimes to highways. In the United Kingdom and the Republic of Ireland path or footpath is the preferred term for a walking trail. Some trails are single use and can only be used for walking, cycling, horse riding, snowshoeing, and cross-country skiing; others, as in the case of a bridleway in the UK, are multi-use, and can be used by walkers, cyclists and equestrians.

There are also unpaved trails used by dirt bikes and other off-road vehicles. In some places, like the Alps, trails are used for moving cattle and other livestock. In the US, the term was historically used for a route into or through wild territory used by emigrants (e.g. the Oregon Trail).

In Australia, the term track can be used interchangeably with trail, and can refer to anything from a dirt road to an unpaved pedestrian path. The term trail gained popularity during World War II, when many servicemen from the United States were stationed in Australia, which probably influenced its being adopted by elements of the Australian media at the time (see Kokoda Track).

In New Zealand, the terms track or walkway are used almost exclusively except in reference to cross-country skiing: "walkways vary enormously in nature, from short urban strolls, to moderate coastal locations, to challenging tramps [hikes] in the high country [mountains]". Walkway is used similarly in St. John's, Newfoundland, Canada, where the "Grand Concourse", is an integrated walkway system.

In the United Kingdom, the term trail is in common usage. Longer distance walking routes, and government-promoted long distance paths, collectively known as National Trails, are also frequently called ways; as in the Pennine Way and South Downs Way. Generally the term footpath is preferred for pedestrian routes, including long distance trails, and is also used for urban paths and sometimes in place of pavement. Track is used for wider paths (wide enough for vehicles), often used for hiking. The terms bridleway, byway, restricted byway are all recognised legal terms and to a greater or lesser extent in general usage.

...
Wikipedia