There are
2,765 mi
from Rock Hill, SC to Milwaukie, OR
That's the driving distance. It would take 2 days 1 hour to go from Rock Hill, South Carolina to Milwaukie, Oregon.
The flight distance (direct flight from Rock Hill, SC to Milwaukie, OR) is 2,284.80 mi.
2,765 mi = 3.22 kms