There are
2,095 mi
from Janesville, WI to Walnut Creek, CA
That's the driving distance. It would take 1 day 11 hours to go from Janesville, Wisconsin to Walnut Creek, California.
The flight distance (direct flight from Janesville, WI to Walnut Creek, CA) is 1,760.85 mi.
2,095 mi = 3,372.19 kms