There are
2,115 mi
from San Leandro, CA to Downers Grove, IL
That's the driving distance. It would take 1 day 12 hours to go from San Leandro, California to Downers Grove, Illinois.
The flight distance (direct flight from San Leandro, CA to Downers Grove, IL) is 1,822.98 mi.
2,115 mi = 3.22 kms