There are
2,046 mi
from Walnut Creek, CA to Greenville, MS
That's the driving distance. It would take 1 day 12 hours to go from Walnut Creek, California to Greenville, Mississippi.
The flight distance (direct flight from Walnut Creek, CA to Greenville, MS) is 1,759.63 mi.
2,046 mi = 3,292.40 kms