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A speed skating rink (or speed skating oval) is an ice rink (but also a ''sport venue'') in which a speed skating competition is held. ==The rink== A standard speed skating track is, according to the regulations of the International Skating Union (ISU), a double-laned track with two curved ends each of 180°, in which the radius of the inner curve is not less than 25 metres and not more than 26 metres. The width of the competition lanes is 4 metres. At the opposite straight of the finishing line, there is a crossing area, where the skaters must change lane. (Special Regulations and Technical Rules ) - Rule 203 At international competitions, the track must be 400 metres long, with a warm-up lane at least 4 metres wide inside the competition lanes.〔ISU Special Regulations and Technical Rules - Rule 205〕 For Olympic competitions, the track must also be enclosed within a building.〔ISU Special Regulations and Technical Rules - Rule 206〕 The design and dimensions of a speed skating track have remained more or less unchanged since the foundation of ISU in 1892. The speed skating track is also used for the sports of Icetrack cycling and Ice speedway 抄文引用元・出典: フリー百科事典『 ウィキペディア（Wikipedia）』 ■ウィキペディアで「speed skating rink」の詳細全文を読む スポンサード リンク
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