There are
2,144 mi
from Concord, CA to Greenfield, WI
That's the driving distance. It would take 1 day 12 hours to go from Concord, California to Greenfield, Wisconsin.
The flight distance (direct flight from Concord, CA to Greenfield, WI) is 1,808.11 mi.
2,144 mi = 3.22 kms