There are
1,876 mi
from Waterloo, IA to Forest Grove, OR
That's the driving distance. It would take 1 day 8 hours to go from Waterloo, Iowa to Forest Grove, Oregon.
The flight distance (direct flight from Waterloo, IA to Forest Grove, OR) is 1,533.72 mi.
1,876 mi = 3,018.59 kms