There are
2,146 mi
from Concord, CA to Greendale, WI
That's the driving distance. It would take 1 day 12 hours to go from Concord, California to Greendale, Wisconsin.
The flight distance (direct flight from Concord, CA to Greendale, WI) is 1,808.97 mi.
2,146 mi = 3.22 kms