There are
2,116 mi
from San Leandro, CA to Glen Ellyn, IL
That's the driving distance. It would take 1 day 12 hours to go from San Leandro, California to Glen Ellyn, Illinois.
The flight distance (direct flight from San Leandro, CA to Glen Ellyn, IL) is 1,819.91 mi.
2,116 mi = 3.22 kms