Get a map of the United States. Locate the key on the map to show how distance is measured on this particular map. For example, if the key shows that one inch is equal to fifty miles, use a rule to measure how many inches are between Hastings and the border of Iowa and then add them by fifty.
Use an online travel planning website, such as Rand McNally or MapQuest. Both sites allow travelers to calculate the distance between destinations as well as locate the least expensive gas stations along your route.
Locate the appropriate boxes to input your starting address and the Iowa border as your ending point of interest, then click "Get Directions." View the results to see the exact number of miles, the estimated time it will take to arrive and a map of your trip.
