There are
704 mi
from Lewisville, TX to Keokuk, IA
That's the driving distance. It would take 13 hours 37 mins to go from Lewisville, Texas to Keokuk, Iowa.
The flight distance (direct flight from Lewisville, TX to Keokuk, IA) is 595.09 mi.
704 mi = 1,133.55 kms