Mile two points on the navigational chart, then place the open dividers against the minutes-of-latitude scale at the edge of the chart, and read off the distance in nautical miles. The Earth is not perfectly spherical but an oblate spheroid, so the length of a minute of latitude increases by 1% from the equator to the poles. Using the WGS84 ellipsoid, the commonly accepted Earth model for many purposes today, one minute of latitude at the WGS84 equator is 6,046 feet and at the poles is 6,107.5 feet. The average is about 6,076 feet (about 1,852 metres or 1.15 statute miles).
Navy Ten Nautical Miler throughout the route are also marked off in nautical miles rather than statute miles. Awards will be presented three deep in the following categories: In April 2010, race coordinators were contacted by Navy personnel serving in Farah, Afghanistan interested in running a satellite version of the race there. As such, the race was ran concurrently in both locations, with winners in each category crowned locally in both locations. The two locations were connected via satellite uplink. Navy Ten Nautical Miler The Navy Ten Nautical Miler (Navy 10 nm, 11.5 mi) is a run held at Naval Support Activity Mid-South in