Miles between Thornton, CO and Antioch, IL

There are
1,003 mi
from Thornton, CO to Antioch, IL

That's the driving distance. It would take 17 hours 53 mins to go from Thornton, Colorado to Antioch, Illinois.

The flight distance (direct flight from Thornton, CO to Antioch, IL) is 894.44 mi.

1,003 mi = 1.61 kms