There are
798 mi
from Davenport, IA to Greenville, TX
That's the driving distance. It would take 15 hours 32 mins to go from Davenport, Iowa to Greenville, Texas.
The flight distance (direct flight from Davenport, IA to Greenville, TX) is 653.90 mi.
798 mi = 1,284.48 kms