There are
755 mi
from Overland Park, KS to Romulus, MI
That's the driving distance. It would take 14 hours 7 mins to go from Overland Park, Kansas to Romulus, Michigan.
The flight distance (direct flight from Overland Park, KS to Romulus, MI) is 631.77 mi.
755 mi = 1,214.46 kms