There are
1,974 mi
from Rialto, CA to Prospect Heights, IL
That's the driving distance. It would take 1 day 10 hours to go from Rialto, California to Prospect Heights, Illinois.
The flight distance (direct flight from Rialto, CA to Prospect Heights, IL) is 1,682.86 mi.
1,974 mi = 1.61 kms