There are
2,852 mi
from San Leandro, CA to Smithfield, NC
That's the driving distance. It would take 2 days 2 hours to go from San Leandro, California to Smithfield, North Carolina.
The flight distance (direct flight from San Leandro, CA to Smithfield, NC) is 2,412.58 mi.
2,852 mi = 4,590.50 kms