There are
618 mi
from Chattanooga, TN to Keokuk, IA
That's the driving distance. It would take 11 hours 45 mins to go from Chattanooga, Tennessee to Keokuk, Iowa.
The flight distance (direct flight from Chattanooga, TN to Keokuk, IA) is 497.30 mi.
618 mi = 994.40 kms