Miles between Thornton, CO and North Chicago, IL

There are
1,020 mi
from Thornton, CO to North Chicago, IL

That's the driving distance. It would take 18 hours 5 mins to go from Thornton, Colorado to North Chicago, Illinois.

The flight distance (direct flight from Thornton, CO to North Chicago, IL) is 906.36 mi.

1,020 mi = 1.61 kms