It is 244.32 miles according tp MapQuest.
The border between Mississippi on the west and Arkansas on the east is the Mississippi River. It also forms the border between Arkansas and Tennessee.
It is 726 miles according to Google Maps.
Mississippi
There are either 3 or 4 states - Missouri is entirely east of the Arkansas and west of the Mississippi, because the Arkansas does not enter the state. - Parts of Kansas, Oklahoma, and Arkansas (where it joins the Mississippi) can be considered "between " the two.
The Mississippi River is the boundary between Tennessee and Arkansas.
Mississippi.
The Mississippi River runs between Tennessee and Arkansas. The Mississippi River forms the western boundary of Tennessee and separates Tennessee from both Arkansas and Missouri.
OHIO
Mississippi touches Tennessee, Arkansas and Alabama. Mississippi is bordered on the north by Tennessee, on the east by Alabama, on the south by Louisiana, and on the west, across the Mississippi River, by Louisiana and Arkansas.
The flight distance from California (CA) to Arkansas (AR) is: 1,539 miles / 2,476 km
The driving distance between Melbourne Arkansas and Springfield Missouri is 163 miles / 262 km.
The driving distance from the Arkansas state line to Atlanta GA is 381 road miles.