There are
2,807 mi
from Vacaville, CA to Knightdale, NC
That's the driving distance. It would take 2 days 2 hours to go from Vacaville, California to Knightdale, North Carolina.
The flight distance (direct flight from Vacaville, CA to Knightdale, NC) is 2,382.87 mi.
2,807 mi = 3.22 kms