There are
1,721 mi
from Rialto, CA to Greenville, MS
That's the driving distance. It would take 1 day 6 hours to go from Rialto, California to Greenville, Mississippi.
The flight distance (direct flight from Rialto, CA to Greenville, MS) is 1,507.82 mi.
1,721 mi = 2,768.90 kms