8 hours?
Indiana
Iowa and Missouri
The river that forms the northwestern border of Missouri and flows west to east through the state is the Missouri River. It is the longest river in North America and plays a significant role in the geography and history of the region. The river eventually merges with the Mississippi River to the south of St. Louis.
Missouri is bordered by Illinois, Kentucky, and Tennessee across the Mississippi River to the east.
Missouri
Illinois and Missouri.
The state of Missouri borders Kansas to the east, and its capital is Jefferson City.
Jefferson City is the capital city in the U.S. state of Missouri.
about 4.5 hours from West to East
The most southern state Iowa borders is Missouri. However, Missouri is a Midwestern state and not a Southern one.
Illinois is farther east, as its western border is mostly on the east bank of the Mississippi River, while across the river to the west are Iowa and Missouri.
Iowa