There are
2,057 mi
from Appleton, WI to Grass Valley, CA
That's the driving distance. It would take 1 day 11 hours to go from Appleton, Wisconsin to Grass Valley, California.
The flight distance (direct flight from Appleton, WI to Grass Valley, CA) is 1,706.88 mi.
2,057 mi = 3.22 kms