There are
989 mi
from Stamford, CT to Manitowoc, WI
That's the driving distance. It would take 18 hours 41 mins to go from Stamford, Connecticut to Manitowoc, Wisconsin.
The flight distance (direct flight from Stamford, CT to Manitowoc, WI) is 747.31 mi.
989 mi = 1,591.70 kms