The phrase "how far is" is commonly used to ask about the distance between two locations or points. To find out the distance, you typically specify the two places you want to measure, and tools or calculators can provide you with the distance in units such as kilometers, miles, or nautical miles. These distances can be given as direct, straight-line distances ("as the crow flies") or the distance by travel routes such as driving or walking paths. Various online tools allow you to enter two cities, addresses, or coordinates and calculate the distance between them with maps shown for visual reference.