There are
773 mi
from Thornton, CO to Coralville, IA
That's the driving distance. It would take 13 hours 28 mins to go from Thornton, Colorado to Coralville, Iowa.
The flight distance (direct flight from Thornton, CO to Coralville, IA) is 710.24 mi.
773 mi = 1,244.71 kms