1. The math is mutiply 39.37 times 25 meters to covert to yards, then divide that number by 36 (27.3 yards equals 25 meters). 2. Divide 400 yards by 27.3. This will give you the answer to your question (14.6 laps or down and back 7.3 times).
16 laps
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It is actually 14.6 laps. Perhaps the earlier answerer did not note that the pool length is in Imperial measure and the total distance is metric. I nearly missed that, too.
to swim 400 meters in a 25 METER pool, you must swim 16 lenghts, but to swim 400 meters in a 25 YARD pool, you must swim 17.5 lengths (so just swim 18 lengths)
400 yards is 14.6 lengths of a 25 m pool.
386.24 Laps
since 1 meter is equal to 1.094 yards, then one lap (one direction) in a 25 meter pool is really 27.35 yards. So then 500 yards at 27.35 yards a lap, you would need to complete a little more than 18 and a quarter laps (18.2815 to be more accurate).
89.4 laps (approx).
It will take 64.4 lengths (32.2 laps) to equal one mile.
1 yard = 0.9144 meters 400 yards x 0.9144 meters = 365.76 365.76/25 = 14 laps
One meter is about 39.37 inches or 1.094 yards.
1 yard = 0.9144 meters.
72 lengths or 36 laps in a 25 meter pool
500 yards is 20 laps
5 yards = 4.572 meters
2 miles is 8 laps of a standard 400 meter track.
13.1234 yards (1.09361 yards per meter).