What distance does 1 degree of latitude approximately equal?

One degree of latitude approximately equals 60 nautical miles. This is based on the Earth's geometry, where the lines of latitude run parallel to each other and maintain a constant distance from one another. Since the Earth's circumference is about 21,600 nautical miles, which is derived from 360 degrees of latitude, when you divide this total distance by the number of degrees, you arrive at approximately 60 nautical miles per degree. This consistent scaling is crucial for navigation, as it provides a reliable measure for plotting courses and determining distances on navigational charts. Understanding this relationship helps navigators accurately calculate travel distances and plan their routes effectively.