Miles between Thornton, CO and St Charles, IL

There are
961 mi
from Thornton, CO to St Charles, IL

That's the driving distance. It would take 17 hours 1 min to go from Thornton, Colorado to St Charles, Illinois.

The flight distance (direct flight from Thornton, CO to St Charles, IL) is 880.19 mi.

961 mi = 1,546.01 kms