There are
866 mi
from Chattanooga, TN to Wausau, WI
That's the driving distance. It would take 16 hours 15 mins to go from Chattanooga, Tennessee to Wausau, Wisconsin.
The flight distance (direct flight from Chattanooga, TN to Wausau, WI) is 721.83 mi.
866 mi = 1,394.24 kms