There are
2,600 mi
from Greenville, SC to Walnut Creek, CA
That's the driving distance. It would take 1 day 21 hours to go from Greenville, South Carolina to Walnut Creek, California.
The flight distance (direct flight from Greenville, SC to Walnut Creek, CA) is 2,200.28 mi.
2,600 mi = 4,184.61 kms