There are
2,545 mi
from Greenville, SC to Gilroy, CA
That's the driving distance. It would take 1 day 20 hours to go from Greenville, South Carolina to Gilroy, California.
The flight distance (direct flight from Greenville, SC to Gilroy, CA) is 2,181.31 mi.
2,545 mi = 4,096.20 kms