There are
753 mi
from Knoxville, TN to Norwalk, CT
That's the driving distance. It would take 14 hours 22 mins to go from Knoxville, Tennessee to Norwalk, Connecticut.
The flight distance (direct flight from Knoxville, TN to Norwalk, CT) is 669.90 mi.
753 mi = 1,211.22 kms