Quechee, Vermont is halfway between Milford & Burlington
Westacres, Michigan is halfway between Milford & Bloomfield Hills
One halfway point between Milford, PA and Virginia Beach, VA is Kitts Hummock, Delaware. You could also consider Baltimore, MD a halfway point.
Hookersville, WV
Milford, DE
The halfway point between Fremont, Ohio and Fort Myers Florida is Kennesaw, Georgia.
If you drive I-80 most of the way, the halfway point is on I-80 between Clarion and Brookville, PA, northeast of Pittsburgh.
Brunswick, GA
Hardeeville, SC
Who knows and why ask
Chattanooga, Tennessee
The halfway point between New York City and Hampton Va is Milford, DE.