The technical term would be the "antipode".
For Pensacola Florida, this is a spot in the Indian ocean about 2000 miles west of Perth, Australia. The nearest dry land is probably the Kerguelen Islands, and even those are well over a thousand miles away.
That would place you in the area of Wets Plains, Missouri - according to Google Earth.
The halfway point between Charlotte and Pensacola is Newman, GA.
The point farthest north on Earth is the North Pole, located at approximately 90 degrees north latitude. The point farthest south on Earth is the South Pole, located at approximately 90 degrees south latitude.
The South Pole is the farthest point south.
The South Pole is the farthest point from the North Pole.
The farthest point north is the North Pole, south is the South Pole, east is the point on the Earth's surface farthest from the Prime Meridian in Greenwich, and west is the point on the Earth's surface farthest from the 180th meridian.
north pole and south pole are the farthest points on earth
The farthest point a satellite in orbit around the Earth can be from the Earth is called apogee. This is the point in the orbit where the satellite is the farthest from Earth.
The Earth's center core
aposelenium
Apogee
In the contiguous 48 states, Minnesota extends slightly farther north than other western states (Washington, Idaho, Montana, North Dakota).The farthest south is Florida, where the Keys extend below 25°N latitude, the approximate southern limit of Texas.