There are
2,188 mi
from Janesville, WI to Mendota, CA
That's the driving distance. It would take 1 day 13 hours to go from Janesville, Wisconsin to Mendota, California.
The flight distance (direct flight from Janesville, WI to Mendota, CA) is 1,705.83 mi.
2,188 mi = 3,520.98 kms