There are
2,137 mi
from San Leandro, CA to Mt Prospect, IL
That's the driving distance. It would take 1 day 12 hours to go from San Leandro, California to Mt Prospect, Illinois.
The flight distance (direct flight from San Leandro, CA to Mt Prospect, IL) is 1,826.06 mi.
2,137 mi = 3.22 kms