Miles between Thornton, CO and Sycamore, IL

There are
944 mi
from Thornton, CO to Sycamore, IL

That's the driving distance. It would take 16 hours 36 mins to go from Thornton, Colorado to Sycamore, Illinois.

The flight distance (direct flight from Thornton, CO to Sycamore, IL) is 861.29 mi.

944 mi = 1,518.90 kms