There are
2,458 mi
from Redwood City, CA to Bay City, MI
That's the driving distance. It would take 1 day 18 hours to go from Redwood City, California to Bay City, Michigan.
The flight distance (direct flight from Redwood City, CA to Bay City, MI) is 2,038.37 mi.
2,458 mi = 3,956.32 kms