Miles between San Diego, CA and Decatur, IL

There are
1,978 mi
from San Diego, CA to Decatur, IL

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

The flight distance (direct flight from San Diego, CA to Decatur, IL) is 1,638.28 mi.

1,978 mi = 1.61 kms