Miles between Naperville, IL and Thornton, CO

There are
968 mi
from Naperville, IL to Thornton, CO

That's the driving distance. It would take 17 hours 2 mins to go from Naperville, Illinois to Thornton, Colorado.

The flight distance (direct flight from Naperville, IL to Thornton, CO) is 888.08 mi.

968 mi = 1,558.60 kms