There are
2,089 mi
from Janesville, WI to Hercules, CA
That's the driving distance. It would take 1 day 11 hours to go from Janesville, Wisconsin to Hercules, California.
The flight distance (direct flight from Janesville, WI to Hercules, CA) is 1,769.46 mi.
2,089 mi = 3,362.36 kms