Miles between Thornton, CO and Park Forest, IL

There are
997 mi
from Thornton, CO to Park Forest, IL

That's the driving distance. It would take 17 hours 39 mins to go from Thornton, Colorado to Park Forest, Illinois.

The flight distance (direct flight from Thornton, CO to Park Forest, IL) is 911.71 mi.

997 mi = 1,603.85 kms