Miles between Thornton, CO and Colleyville, TX

There are
765 mi
from Thornton, CO to Colleyville, TX

That's the driving distance. It would take 14 hours 14 mins to go from Thornton, Colorado to Colleyville, Texas.

The flight distance (direct flight from Thornton, CO to Colleyville, TX) is 649.19 mi.

765 mi = 1,231.63 kms