The halfway point would be either Milesburg or Bellefonte, PA. The two towns are right next to each other.
Woodlawn, Virgina
There are no major cities between Akron and Parma via I77 S/N. The halfway point would be 20 miles, as the total trip is 40 miles.
Millington, Michigan.
Greenfield, IN
Charleston, wv
Gary, IN
Terre Haute, Indiana
berlington,vermont
Lexington, KY
One halfway point between Saint Louis, Missouri and Manhattan, Kansas is Sweet Springs, MO.
Interstate 75, Berea, KY 40403
Just south of Nashville near Columbia, TN.