There are
2,084 mi
from Janesville, WI to Antioch, CA
That's the driving distance. It would take 1 day 12 hours to go from Janesville, Wisconsin to Antioch, California.
The flight distance (direct flight from Janesville, WI to Antioch, CA) is 1,745.23 mi.
2,084 mi = 3,353.12 kms