How Many Laps Is 400 Meters?

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A regulation Olympic-size pool is 50 meters long, so it takes four laps of swimming from one end of the pool to the other to complete 400 meters. The 400-meter freestyle swim for men and women is part of the summer Olympic games.

The 400-meter swim also is close to a 1/4-mile swim, which is a common distance in sprint triathlons, according to Tri-Newbies Online, an instruction site for beginning triathletes. Individuals who wish to complete a triathlon should practice using as few strokes as possible to complete a lap in the pool, notes Fewer strokes mean less wasted energy and a faster swim.