There are
2,742 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.
2,742 mi = 4,413.60 kms