There are
1,943 mi
from Rancho Cucamonga, CA to South Elgin, IL
That's the driving distance. It would take 1 day 10 hours to go from Rancho Cucamonga, California to South Elgin, Illinois.
The flight distance (direct flight from Rancho Cucamonga, CA to South Elgin, IL) is 1,675.06 mi.
1,943 mi = 1.61 kms