There are
1,943 mi
from San Bernardino, CA to Warrenville, IL
That's the driving distance. It would take 1 day 9 hours to go from San Bernardino, California to Warrenville, Illinois.
The flight distance (direct flight from San Bernardino, CA to Warrenville, IL) is 1,663.71 mi.
1,943 mi = 1.61 kms