There are
850 mi
from Hayward, CA to Marysville, WA
That's the driving distance. It would take 16 hours 25 mins to go from Hayward, California to Marysville, Washington.
The flight distance (direct flight from Hayward, CA to Marysville, WA) is 717.41 mi.
850 mi = 1,368.02 kms