How many laps in a 50 m pool for a 100m swim?

In a 50m pool, a 100m swim would require 2 laps. Each lap is 50m, so swimming two laps would cover a total distance of 100m. Swimmers would start at one end of the pool, swim to the other end (50m), turn around, and swim back to the starting point (another 50m) to complete the 100m swim.