There are
2,223 mi
from Green Bay, WI to San Leandro, CA
That's the driving distance. It would take 1 day 15 hours to go from Green Bay, Wisconsin to San Leandro, California.
The flight distance (direct flight from Green Bay, WI to San Leandro, CA) is 1,823.19 mi.
2,223 mi = 3.22 kms