Whether swimming in an Olympic-sized 50-meter pool or a 25-yard, 25-meter pool, a person’s required number of laps to complete 400 metres varies. Given that one yard is equivalent to.91440 metres, 25 yards is equal to 22.860 metres.
Individuals must swim 18 complete laps in a typical 25-yard pool to complete 400 metres. A person needs to swim 16 laps in a 25-meter pool to complete 400 metres. The distance of 400 metres, or roughly a quarter mile, may be covered in eight laps in an Olympic-sized pool with a length of 50 metres.