There are
2,235 mi
from Janesville, WI to Eureka, CA
That's the driving distance. It would take 1 day 15 hours to go from Janesville, Wisconsin to Eureka, California.
The flight distance (direct flight from Janesville, WI to Eureka, CA) is 1,803.45 mi.
2,235 mi = 3,597.62 kms