There are
986 mi
from Danbury, CT to Fond Du Lac, WI
That's the driving distance. It would take 18 hours 30 mins to go from Danbury, Connecticut to Fond Du Lac, Wisconsin.
The flight distance (direct flight from Danbury, CT to Fond Du Lac, WI) is 779.07 mi.
986 mi = 1,586.04 kms