Thornton, IN
Halfway between Columbus and Cincinnati
The halfway point from Traverse City, MI. and Atlanta GA. would be Cincinnati, Ohio.
The halfway point between Chicago Illinois and Winnsboro Texas is Portageville, Missouri.
Van Buren Point, New York is halfway between Chicago & Montpelier
lisbon
Hubbard, OH
Princeton, WV
Cave, Missouri is halfway between Fayetteville & Chicago
Cheyenne, WY
Elk City, OK
Beckley WV or Covington VA are close to halfway and have hotels and food
Greensburg, Indiana- seems to be about the halfway point. That should be about 3.5 hrs from HUNTINGTON to Greensburg then 3.5 hrs to CHICAGO.