There are
2,078 mi
from San Leandro, CA to Collinsville, IL
That's the driving distance. It would take 1 day 12 hours to go from San Leandro, California to Collinsville, Illinois.
The flight distance (direct flight from San Leandro, CA to Collinsville, IL) is 1,739.12 mi.
2,078 mi = 3.22 kms