Miles between Thornton, CO and Dekalb, IL

There are
937 mi
from Thornton, CO to Dekalb, IL

That's the driving distance. It would take 16 hours 26 mins to go from Thornton, Colorado to Dekalb, Illinois.

The flight distance (direct flight from Thornton, CO to Dekalb, IL) is 857.72 mi.

937 mi = 1,507.18 kms