There are
2,090 mi
from San Leandro, CA to Decatur, IL
That's the driving distance. It would take 1 day 12 hours to go from San Leandro, California to Decatur, Illinois.
The flight distance (direct flight from San Leandro, CA to Decatur, IL) is 1,783.92 mi.
2,090 mi = 3.22 kms