Miles between Thornton, CO and Keller, TX

There are
755 mi
from Thornton, CO to Keller, TX

That's the driving distance. It would take 14 hours 6 mins to go from Thornton, Colorado to Keller, Texas.

The flight distance (direct flight from Thornton, CO to Keller, TX) is 642.75 mi.

755 mi = 1,214.91 kms