There are
1,244 mi
from St Charles, MO to Williston, ND
That's the driving distance. It would take 21 hours 34 mins to go from St Charles, Missouri to Williston, North Dakota.
The flight distance (direct flight from St Charles, MO to Williston, ND) is 919.55 mi.
1,244 mi = 2,001.50 kms