Miles between Thornton, CO and Northbrook, IL

There are
1,003 mi
from Thornton, CO to Northbrook, IL

That's the driving distance. It would take 17 hours 47 mins to go from Thornton, Colorado to Northbrook, Illinois.

The flight distance (direct flight from Thornton, CO to Northbrook, IL) is 905.88 mi.

1,003 mi = 1.61 kms