A trail is a path or road used for walking, cycling, cross-country skiing, or other activities. Some trails are off-limits to everyone other than hikers, and a few trails allow motorized vehicles.

Less established and unofficial trails are sometimes referred to as herd paths, as they are formed by frequent use rather than official maintenance.

Etymology

In the United Kingdom and United States, the word footpath is also used to mean a trail; however in Australian English, New Zealand English, Indian English this word means "sidewalk" (American English) or "pavement" (British English).

In Australia, the word track can be used interchangeably with trail, and can refer to anything from a dirt road to a pedestrian walkway (generally also unpaved). 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 word track is used almost exclusively except in reference to cross-country skiing, where trail is used. In England and Wales, the government-promoted long-distance paths are known as 'National Trails'

Walking trails

Trail use has become very popular for a wide variety of users. Some trails are designated as nature trails, and are used by people learning about the natural world. Many trails are designated day trails, meaning that they are generally used by people out for a short hike, less than a day. Some trails are designated backpacking trails, or long-distance trails, and are used by both day hikers and by backpackers. Some of the trails are over a thousand miles (1,500 km) long and may be hiked in sections by backpackers, or completed in one trip by dedicated hikers. Some trails are specifically used by other outdoor enthusiasts to gain access to another feature, such as good climbing sites. Many runners also favor running on trails rather than pavement, as giving a more vigorous work-out and better developing agility skills, as well as providing a more pleasant exercise environment.

Stairway trails

Stairway trails are another way to ascend higher slopes. The stairs are constructed by making cuts in the dirt, rocks, or concrete. Stairway trails are usually for walking only. Popular stairway trails include the Stairway Trails in Bernal Heights, East - San Francisco, and the stairs at many hilltop Hindu temples such as the Palani Murugan Temple located in Tirumala, used during pilgrimage & Machu Picchu.Fact: date=October 2007