What do you call a distance of 5 nautical miles?

The correct answer is five nautical miles because this terminology is the standard unit of measurement used in aviation and maritime contexts. A nautical mile is based on the circumference of the Earth and is equal to one minute of latitude. It is widely used for navigation because it provides a consistent way to measure distances over the Earth's surface.

Using "five nautical miles" clearly communicates the specific distance relevant to aviation operations, ensuring that pilots and air traffic control personnel can accurately understand and relay positioning and navigation information.

Other phrases, such as "five zero miles," are not standard and may lead to confusion, as they imply a different format often used in reporting distances. Similarly, "three five miles" does not represent the necessary measurement and may cause miscommunication. Lastly, referring simply to "five miles" neglects the nautical measurement which is critical for discussions related to airspace and flight paths.