There are
2,663 mi
from Walnut Creek, CA to Cayce, SC
That's the driving distance. It would take 1 day 22 hours to go from Walnut Creek, California to Cayce, South Carolina.
The flight distance (direct flight from Walnut Creek, CA to Cayce, SC) is 2,290.83 mi.
2,663 mi = 4,285.74 kms