361 miles
The Florida peninsula is approximately 160 miles wide at its widest point from east to west.
Mississippi is approximately 170 miles wide from east to west.
The United States is about 2,680 miles wide from east to west.
Arkansas stretches about 240 miles from east to west.
East to West, about 10 miles.
about 100 miles
Iowa is 310 miles long (north to south) and 200 miles wide (east to west).
Australia is approximately 2,500 miles (4,000 kilometers) wide from east to west.
It is 2500 miles from west to east.
Tennessee is about 440 miles long (east to west) and 120 miles wide (north to south).
The state of Mississippi is 340 miles long (north to south) and 170 miles wide (east to west).
Kansas is about 400 miles wide from east to west.