250metres

250 metres is a length in the metric system equal to 250 meters. It is 0.25 kilometers, approximately 820.2 feet, or about 273.4 yards. In nautical terms, it is roughly 0.135 nautical miles.

It is used in sports, construction, and geography as a convenient measurement. In athletics, 250 metres is not one of the standard outdoor Olympic events (outdoor sprints typically include 100 m, 200 m, and 400 m); however, some indoor tracks and local competitions employ 250-metre laps or segments for training, time trials, or nonstandard races. In road, rail, and civil planning, 250 m can mark segments, sighting distances, or safety buffers. In surveying, measuring a 250 m length helps define parcels, routes, or alignment checks.

The metre, the base unit of length in the International System of Units, is defined by physical constants. Since 1983, the metre is defined as the distance light travels in vacuum in 1/299,792,458 of a second, which anchors other measurements, including 250 metres, to universal constants.

See also: meter, kilometer, yard, foot.