There are
1,320 mi
from St Charles, MO to Herriman, UT
That's the driving distance. It would take 23 hours 5 mins to go from St Charles, Missouri to Herriman, Utah.
The flight distance (direct flight from St Charles, MO to Herriman, UT) is 1,148.19 mi.
1,320 mi = 2,124.06 kms