There are
2,099 mi
from Pittsburg, CA to Downers Grove, IL
That's the driving distance. It would take 1 day 12 hours to go from Pittsburg, California to Downers Grove, Illinois.
The flight distance (direct flight from Pittsburg, CA to Downers Grove, IL) is 1,802.08 mi.
2,099 mi = 3,377.70 kms