There are
653 mi
from Thornton, CO to Waukee, IA
That's the driving distance. It would take 11 hours 17 mins to go from Thornton, Colorado to Waukee, Iowa.
The flight distance (direct flight from Thornton, CO to Waukee, IA) is 592.31 mi.
653 mi = 1,050.43 kms