There are
1,912 mi
from Fountain Valley, CA to Picayune, MS
That's the driving distance. It would take 1 day 9 hours to go from Fountain Valley, California to Picayune, Mississippi.
The flight distance (direct flight from Fountain Valley, CA to Picayune, MS) is 1,663.92 mi.
1,912 mi = 3,077.75 kms