There are
698 mi
from Roanoke, VA to Ballwin, MO
That's the driving distance. It would take 13 hours 27 mins to go from Roanoke, Virginia to Ballwin, Missouri.
The flight distance (direct flight from Roanoke, VA to Ballwin, MO) is 584.77 mi.
698 mi = 1,123.82 kms