There are
1,997 mi
from Rockford, IL to Marysville, WA
That's the driving distance. It would take 1 day 11 hours to go from Rockford, Illinois to Marysville, Washington.
The flight distance (direct flight from Rockford, IL to Marysville, WA) is 1,646.73 mi.
1,997 mi = 1.61 kms