Miles between Thornton, CO and Westchester, IL

There are
984 mi
from Thornton, CO to Westchester, IL

That's the driving distance. It would take 17 hours 21 mins to go from Thornton, Colorado to Westchester, Illinois.

The flight distance (direct flight from Thornton, CO to Westchester, IL) is 902.02 mi.

984 mi = 1,583.17 kms