Miles between Ontario, CA and Mattoon, IL

There are
1,923 mi
from Ontario, CA to Mattoon, IL

That's the driving distance. It would take 1 day 9 hours to go from Ontario, California to Mattoon, Illinois.

The flight distance (direct flight from Ontario, CA to Mattoon, IL) is 1,655.26 mi.

1,923 mi = 1.61 kms