There are
1,975 mi
from Rancho Cucamonga, CA to Mt Prospect, IL
That's the driving distance. It would take 1 day 10 hours to go from Rancho Cucamonga, California to Mt Prospect, Illinois.
The flight distance (direct flight from Rancho Cucamonga, CA to Mt Prospect, IL) is 1,693.84 mi.
1,975 mi = 1.61 kms