There are
998 mi
from Chino Hills, CA to Milwaukie, OR
That's the driving distance. It would take 18 hours 50 mins to go from Chino Hills, California to Milwaukie, Oregon.
The flight distance (direct flight from Chino Hills, CA to Milwaukie, OR) is 832.97 mi.
998 mi = 1,606.22 kms