There are
987 mi
from St Charles, MO to Hackensack, NJ
That's the driving distance. It would take 18 hours 31 mins to go from St Charles, Missouri to Hackensack, New Jersey.
The flight distance (direct flight from St Charles, MO to Hackensack, NJ) is 884.28 mi.
987 mi = 1,589.05 kms