Miles between Thornton, CO and Zion, IL

There are
1,018 mi
from Thornton, CO to Zion, IL

That's the driving distance. It would take 18 hours 17 mins to go from Thornton, Colorado to Zion, Illinois.

The flight distance (direct flight from Thornton, CO to Zion, IL) is 907.56 mi.

1,018 mi = 1.61 kms