How are distances measured on a map?

Question

If a map indicates a distance between cities, what points are used for that measurement. Is there a central point determined for each city? For instance, if it states that the distance between City A and City B is 200 miles, is that border to border or to the center of each city?

Answer 1

Usually City distances are measured from City point to another City Point. The city area (Polygon) is not taken into account. If I ask you to put a dot on a map where your city is (it is usually the downtown area) and the same for the other city. so measuring from point 1 to point 2 is listed as the distance.

Answer 2

It's to the center of each, using main roads.