Visit MapQuest to determine the number of miles between states. Click on "Directions" and enter your starting and ending addresses. You can also enter your starting city and state and your destination city and state to obtain mileage. Click "Get Directions" to see the number of miles between cities.
Use the Rand McNally mileage calculator to find out the distance between two states. Enter your starting and ending points and click "Get Mileage". View your results to see the number of miles between two states.
Locate a map. Use the mileage information on the map to determine the distance between states. Some maps offer the exact mileage between major cities, meaning you can add the mileage between cities together to calculate the distance between states. Other maps use keys to show how far one inch on your map is in miles so you can use a ruler to determine the mileage between states.