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The 200 metres, or 200-meter dash, is a sprint running event. On an outdoor 400 metre racetrack, the race begins on the curve and ends on the home straight , so a combination of techniques is needed to successfully run the race.
The 1928 games were also the first games to use a 400-meter track, which became the standard for track and field. The modern sprinting events have their roots in races of imperial measurements which were later altered to metric: the 100 m evolved from the 100-yard dash , [ 7 ] the 200 m distance came from the furlong (or 1 ⁄ 8 mile ), [ 8 ...
At the 200 m final on August 1, Johnson ran the opening 100 meters in 10.12 seconds and finished the race in a world-record time of 19.32 seconds, breaking by more than three tenths of a second the previous record he had set in the U.S. Olympic Trials, on the same track one month earlier—the largest improvement ever on a 200 m world record.
In running events up to 200 m in distance and in horizontal jump events, wind assistance is permitted only up to 2.0 m/s. In decathlon or heptathlon , average wind assistance of less than 2.0 m/s is required across all applicable disciplines; and maximum of 4.0 m/s in any one event.
Outdoor times for track races between 200 meters to 10,000 meters are set on 400-meter unbanked tracks. Indoor marks are established on 200-meter tracks, whether banked or unbanked. Indoor tracks longer than 200 meters are considered "oversized" and times are not accepted for record purposes.
An all-weather running track is a ... his 100 metres and 200 metres world ... and world records can be set on tracks that are not exactly 37 meters, provided they ...
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The IAAF maintained separate records for 200 m over a straight track and over a curved track until 1976, when records for the former were discarded. The IAAF ratified the first record for 200 m on a curved track in 1951. "y" denotes times for 220 yards (201.17 m) which were also ratified for the event.