There are
2,810 mi
from Manteca, CA to Smithfield, NC
That's the driving distance. It would take 2 days 1 hour to go from Manteca, California to Smithfield, North Carolina.
The flight distance (direct flight from Manteca, CA to Smithfield, NC) is 2,361.14 mi.
2,810 mi = 4,521.65 kms