The distance from Jacksonville, Florida to Los Angeles, California is about 3888 km. The earth’s circumference is about 40 000 km (source), so the US spans about 10% of that, roughly :)

The distance from Jacksonville, Florida to Los Angeles, California is about 3888 km. The earth’s circumference is about 40 000 km (source), so the US spans about 10% of that, roughly :)

Projection doesn’t matter, distance remains consistent even if it appears longer or shorter than it is in reality.
That distance does follow the curve of the Earth. It necessarily must. Driving from Jacksonville to LA does not tunnel 3 miles beneath the surface of it earth.