Miles between Ontario, CA and Darien, IL

There are
1,964 mi
from Ontario, CA to Darien, IL

That's the driving distance. It would take 1 day 10 hours to go from Ontario, California to Darien, Illinois.

The flight distance (direct flight from Ontario, CA to Darien, IL) is 1,692.93 mi.

1,964 mi = 1.61 kms