Miles between Thornton, CO and Richardson, TX

There are
785 mi
from Thornton, CO to Richardson, TX

That's the driving distance. It would take 14 hours 36 mins to go from Thornton, Colorado to Richardson, Texas.

The flight distance (direct flight from Thornton, CO to Richardson, TX) is 661.71 mi.

785 mi = 1,263.85 kms