Miles between Thornton, CO and River Forest, IL

There are
989 mi
from Thornton, CO to River Forest, IL

That's the driving distance. It would take 17 hours 30 mins to go from Thornton, Colorado to River Forest, Illinois.

The flight distance (direct flight from Thornton, CO to River Forest, IL) is 905.63 mi.

989 mi = 1,591.77 kms