Miles between Thornton, CO and Chicago Heights, IL

There are
997 mi
from Thornton, CO to Chicago Heights, IL

That's the driving distance. It would take 17 hours 40 mins to go from Thornton, Colorado to Chicago Heights, Illinois.

The flight distance (direct flight from Thornton, CO to Chicago Heights, IL) is 913.75 mi.

997 mi = 1,604.96 kms