There are
2,480 mi
from Saginaw, MI to Watsonville, CA
That's the driving distance. It would take 1 day 19 hours to go from Saginaw, Michigan to Watsonville, California.
The flight distance (direct flight from Saginaw, MI to Watsonville, CA) is 2,027.87 mi.
2,480 mi = 3,991.03 kms