To convert 1140 kilometers to miles, multiply 1140 by the conversion factor 0.621371. This yields 1140 × 0.621371 = 708.3632 miles.

Converting between kilometers and miles is crucial for international travel, understanding maps, interpreting road signs, and communicating distances accurately in regions that use different measurement systems (e.g., most of the world uses kilometers, while the United States and United Kingdom primarily use miles for road distances).