There are
2,009 mi
from St Charles, MO to Troutdale, OR
That's the driving distance. It would take 1 day 10 hours to go from St Charles, Missouri to Troutdale, Oregon.
The flight distance (direct flight from St Charles, MO to Troutdale, OR) is 1,685.36 mi.
2,009 mi = 3,232.86 kms