There are
1,975 mi
from Rancho Cucamonga, CA to Park Forest, IL
That's the driving distance. It would take 1 day 10 hours to go from Rancho Cucamonga, California to Park Forest, Illinois.
The flight distance (direct flight from Rancho Cucamonga, CA to Park Forest, IL) is 1,701.44 mi.
1,975 mi = 1.61 kms