求翻译：中跑是在公元前724年第14届古奥运会上首次被列为正式比赛项目的。中跑的长度是两个跑道长384米。在终点线折回处，有转向石柱，竞技者绕过石柱，再返身往回跑，跑法与往返跑相似。是什么意思？

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Run in 724 BCE in ancient Olympics in the first 14 session an official event for the first time. ran the length of the two runways is 384 meters long. At the finish line at 1605 hours, there is a shift to stone monoliths Bypass, players, and then turned back and running shuttle runs with similar.

The medium-distance running is listed for the first time as at 724 B.C. 14th session of ancient Olympic Games the regulation game project.The medium-distance running length is two runway length 384 meters.Turns back in the goal line place, has changes the stone column, athletics round stone column,

Go down in 724 BC, on the 14th ancient Olympic Games was listed as a formal event for the first time. Run length is 384 m of runway two. Back at the finish line, turned to stone pillars, competitive to bypass the stone pillars, and then swing around double, running method and a round trip and simila