If you're driving (and take the fastest route) it would be St. Clairsville and Wheeling in Ohio and Washington in Pennsylvania. If the distance is direct it would be Parkersburg, West Virginia.
West Frankfort, IL
Bettendorf, IA but anywhere in the Quad Cities would be fine.
Effingham, IL is about halfway between these two cities.
There is approximately 748 miles between Madison, Wisconsin and Rochester, New York. The halfway point between these two cities is Toledo, Ohio.
There is approximately 2,327 miles between these two cities. Halfway would be 1,164 miles, in the Badlands of South Dakota, near Scenic, SD.
Indianapolis, IA Indianapolis, IN and Indianapolis, OK
There is a category on this website for "Halfway Points." You can also find the distance between two of your cities and divide it in two. The distance between Philadelphia and Chicago is 760 miles. The halfway point is 380 miles.
Depending on the cities you start and end at , somewhere in southern Kansas or northern Oklahoma
The city that is halfway between Miami, FL and Charleston, SC is Cedar Landing, FL. It is the exact halfway point between the two cities.
There is approximately 106 miles between Orlando, Florida and Clear water, Florida. The halfway point between these two cities is Lakeland, Florida.
Pendleton, Oregon, seems to be about halfway between Boise and Tacoma. The Tri-Cities are nearby the halfway point, and they are a larger metro area.
Gary, IN