The toe line in darts is 7 feet, 9 1/4 inches from the board. The board is hung at a height of 5 feet, 8 inches from the floor.
The British Darts Organisation, or the BDO for short, is a darts organisation founded on 7 January 1973 by Olly Croft, OBE. The BDO is a founder member of the World Darts Federation which was formed in 1976. The BDO comprises 66 member counties in Britain and organises tournaments for amateurs and professionals.
The BDO set the rules which govern the game of darts, including the size of the throwing oche (2.37m / 7 ft 9 ¼ inches) and the height and dimensions of the board. The BDO organised the first World Professional Darts Championship in 1978, known for many years as The Embassy - due to its sponsorship by Imperial Tobacco. It is now known as the Lakeside World Professional Darts Championship - or Lakeside for short.
American Darts is a regional variant of the game (most U.S. dart players play the traditional "English" style darts). This style of dart board is most often found in eastern Pennsylvania, New Jersey, Delaware, Maryland, and parts of New York state. American Darts originated in eastern Pennsylvania in the early 20th century; this style of darts was first played in both the Philadelphia area and the coal regions of northeastern PA.