There are
1,941 mi
from St Charles, MO to The Dalles, OR
That's the driving distance. It would take 1 day 9 hours to go from St Charles, Missouri to The Dalles, Oregon.
The flight distance (direct flight from St Charles, MO to The Dalles, OR) is 1,627.52 mi.
1,941 mi = 3,124.16 kms