There are
2,084 mi
from Vallejo, CA to Marshfield, WI
That's the driving distance. It would take 1 day 12 hours to go from Vallejo, California to Marshfield, Wisconsin.
The flight distance (direct flight from Vallejo, CA to Marshfield, WI) is 1,711.73 mi.
2,084 mi = 3.22 kms