Miles between Thornton, CO and Roma, TX

There are
1,183 mi
from Thornton, CO to Roma, TX

That's the driving distance. It would take 21 hours 15 mins to go from Thornton, Colorado to Roma, Texas.

The flight distance (direct flight from Thornton, CO to Roma, TX) is 991.47 mi.

1,183 mi = 1,904.40 kms