Miles between Thornton, CO and Round Lake Beach, IL

There are
1,000 mi
from Thornton, CO to Round Lake Beach, IL

That's the driving distance. It would take 18 hours to go from Thornton, Colorado to Round Lake Beach, Illinois.

The flight distance (direct flight from Thornton, CO to Round Lake Beach, IL) is 894 mi.

1,000 mi = 1,609.31 kms