There are
844 mi
from Davenport, IA to Gainesville, TX
That's the driving distance. It would take 14 hours 54 mins to go from Davenport, Iowa to Gainesville, Texas.
The flight distance (direct flight from Davenport, IA to Gainesville, TX) is 652.70 mi.
844 mi = 1,358.43 kms