Miles between Thornton, CO and Montgomery, IL

There are
963 mi
from Thornton, CO to Montgomery, IL

That's the driving distance. It would take 16 hours 56 mins to go from Thornton, Colorado to Montgomery, Illinois.

The flight distance (direct flight from Thornton, CO to Montgomery, IL) is 877.66 mi.

963 mi = 1,549.86 kms