Miles between Thornton, CO and Forest Park, IL

There are
988 mi
from Thornton, CO to Forest Park, IL

That's the driving distance. It would take 17 hours 25 mins to go from Thornton, Colorado to Forest Park, Illinois.

The flight distance (direct flight from Thornton, CO to Forest Park, IL) is 905.58 mi.

988 mi = 1,589.59 kms