There are
2,853 mi
from Danbury, CT to Simi Valley, CA
That's the driving distance. It would take 2 days 3 hours to go from Danbury, Connecticut to Simi Valley, California.
The flight distance (direct flight from Danbury, CT to Simi Valley, CA) is 2,492.91 mi.
2,853 mi = 3.22 kms