There are
1,909 mi
from Rancho Cucamonga, CA to Ottawa, IL
That's the driving distance. It would take 1 day 9 hours to go from Rancho Cucamonga, California to Ottawa, Illinois.
The flight distance (direct flight from Rancho Cucamonga, CA to Ottawa, IL) is 1,640.11 mi.
1,909 mi = 1.61 kms