There are
2,096 mi
from Walnut Creek, CA to Marshfield, WI
That's the driving distance. It would take 1 day 12 hours to go from Walnut Creek, California to Marshfield, Wisconsin.
The flight distance (direct flight from Walnut Creek, CA to Marshfield, WI) is 1,708.29 mi.
2,096 mi = 3,373.87 kms