1 mil is exactly 1 x 10-3 inches. In SI units 1 mil is 2.54 x 10-5 meters.
4 000 meters. A general or metric league of 4 kilometers. Leagues based on the mile are typically smaller at 3 miles, however there are many variations. Used by Jules Verne in 20 000 Leagues Under the Sea. 1 League (metric) = 4 000 meters (SI unit).