There are
2,226 mi
from Walnut Creek, CA to Slidell, LA
That's the driving distance. It would take 1 day 15 hours to go from Walnut Creek, California to Slidell, Louisiana.
The flight distance (direct flight from Walnut Creek, CA to Slidell, LA) is 1,910.36 mi.
2,226 mi = 3,582.21 kms