1 mile = 1,000 [double] paces of 0.8m each = 1,600m

1m = 1e-10 times half-meridian from the North Pole to the equator, via Paris for a croissant, apparently.

So kind of a coincindence... But a very neat one. Meanwhile, ratio of adjacent Fibonacci numbers converves to some expression involving sqrt(5) which is approx 1.6