There are
2,794 mi
from Danbury, CT to Rancho Cucamonga, CA
That's the driving distance. It would take 2 days 1 hour to go from Danbury, Connecticut to Rancho Cucamonga, California.
The flight distance (direct flight from Danbury, CT to Rancho Cucamonga, CA) is 2,436.22 mi.
2,794 mi = 4,496.87 kms