There are
2,747 mi
from Greensboro, NC to Los Altos, CA
That's the driving distance. It would take 2 days to go from Greensboro, North Carolina to Los Altos, California.
The flight distance (direct flight from Greensboro, NC to Los Altos, CA) is 2,325.58 mi.
2,747 mi = 3.22 kms