There are
1,142 mi
from Danbury, CT to Altoona, IA
That's the driving distance. It would take 21 hours 9 mins to go from Danbury, Connecticut to Altoona, Iowa.
The flight distance (direct flight from Danbury, CT to Altoona, IA) is 1,033.37 mi.
1,142 mi = 1.61 kms