Miles between Thornton, CO and Alton, TX

There are
1,180 mi
from Thornton, CO to Alton, TX

That's the driving distance. It would take 21 hours 12 mins to go from Thornton, Colorado to Alton, Texas.

The flight distance (direct flight from Thornton, CO to Alton, TX) is 1,013.63 mi.

1,180 mi = 1,899.46 kms