This is a list of Furth mountains in Britain and Ireland by height. Furths are defined as mountains that meet the classification criteria to be a Scottish Munro, including being over 3,000 feet (914.4 m) in elevation, but which are furth of (i.e. "outside" of) Scotland. They are also called Welsh Munros, Irish Munros, and English Munros respectively, or the three-thousanders, as in The Welsh 3000 challenge.