There are
2,320 mi
from Greenville, SC to Downey, CA
That's the driving distance. It would take 1 day 16 hours to go from Greenville, South Carolina to Downey, California.
The flight distance (direct flight from Greenville, SC to Downey, CA) is 2,027.68 mi.
2,320 mi = 3,733.25 kms