270 miles (434 kilometers).
The Illinois River flows through Illinois, from the northeast of the state at the end of the Kankakee River and the Des Plaines River in Grundy County and flowing down 270 miles to the southwest, where it meets the Mississippi River
Illinois borders Indiana to the west.
The capital of Indiana, which is a state that borders Illinois is Indianapolis.
The Mississippi River borders Illinois on the west.
Lake Michigan forms the northeastern border of the State of Illinois.
Illinois has some body of water on most borders. Three bodies of water that form borders of Illinois are the Mississippi River, Lake Michigan, and The Ohio River.
Illinois shares its borders with several states: to the north, it borders Wisconsin; to the east, it borders Indiana; to the south, it borders Kentucky; and to the west, it borders Iowa and Missouri. Each of these states contributes to Illinois' geographic and cultural diversity.
Illinois shares land borders with several other US states and one of the Great Lakes, but does not share a border with another country. It is possible, though, to travel by boat from Illinois to Canada.
Illinois borders the Mississippi River to the west.
Indiana borders Lake Michigan to the northwest, Michigan to the north, Ohio to the east, Kentucky to the south and southeast, and Illinois to the west.
Illinois does not border the Gulf of Mexico. Illinois borders Lake Michigan.
Michigan, Ohio, Kentucky, and Illinois border Indiana.
The Mississippi River