There are
2,985 mi
from Danbury, CT to Los Altos, CA
That's the driving distance. It would take 2 days 4 hours to go from Danbury, Connecticut to Los Altos, California.
The flight distance (direct flight from Danbury, CT to Los Altos, CA) is 2,578.94 mi.
2,985 mi = 3.22 kms