Miles between Cicero, IL and Thornton, CO

There are
991 mi
from Cicero, IL to Thornton, CO

That's the driving distance. It would take 17 hours 31 mins to go from Cicero, Illinois to Thornton, Colorado.

The flight distance (direct flight from Cicero, IL to Thornton, CO) is 908.53 mi.

991 mi = 1,595.00 kms