There are
2,123 mi
from San Leandro, CA to Westchester, IL
That's the driving distance. It would take 1 day 12 hours to go from San Leandro, California to Westchester, Illinois.
The flight distance (direct flight from San Leandro, CA to Westchester, IL) is 1,829.56 mi.
2,123 mi = 3.22 kms