There are
416 mi
from Chattanooga, TN to Piqua, OH
That's the driving distance. It would take 8 hours 8 mins to go from Chattanooga, Tennessee to Piqua, Ohio.
The flight distance (direct flight from Chattanooga, TN to Piqua, OH) is 357.12 mi.
416 mi = 670.03 kms