There are
1,976 mi
from Janesville, WI to Walnut, CA
That's the driving distance. It would take 1 day 10 hours to go from Janesville, Wisconsin to Walnut, California.
The flight distance (direct flight from Janesville, WI to Walnut, CA) is 1,663.64 mi.
1,976 mi = 3,180.09 kms