if the track is 1/10th of a mile, you would have to make ten
laps to equal one mile. you would have make 5 laps to make half a
mile. So 10 laps plus 5 laps equals 15 laps.
A normal outside track in the U.S. is 440 yards. One mile is 4
laps. Since a 110 yard track is only one-fourth as long, it will
take four times as many laps, namely, 16.