There are
2,716 mi
from Roanoke, VA to Los Altos, CA
That's the driving distance. It would take 2 days to go from Roanoke, Virginia to Los Altos, California.
The flight distance (direct flight from Roanoke, VA to Los Altos, CA) is 2,297.18 mi.
2,716 mi = 3.22 kms