Miles between Thornton, CO and Belleville, IL

There are
868 mi
from Thornton, CO to Belleville, IL

That's the driving distance. It would take 15 hours 24 mins to go from Thornton, Colorado to Belleville, Illinois.

The flight distance (direct flight from Thornton, CO to Belleville, IL) is 807 mi.

868 mi = 1,396.42 kms