There are
1,946 mi
from Elgin, IL to Rancho Cucamonga, CA
That's the driving distance. It would take 1 day 10 hours to go from Elgin, Illinois to Rancho Cucamonga, California.
The flight distance (direct flight from Elgin, IL to Rancho Cucamonga, CA) is 1,676.10 mi.
1,946 mi = 1.61 kms