There are
1,831 mi
from Concord, CA to Marshalltown, IA
That's the driving distance. It would take 1 day 7 hours to go from Concord, California to Marshalltown, Iowa.
The flight distance (direct flight from Concord, CA to Marshalltown, IA) is 1,558.75 mi.
1,831 mi = 1.61 kms