There are
1,984 mi
from Redlands, CA to Prospect Heights, IL
That's the driving distance. It would take 1 day 10 hours to go from Redlands, California to Prospect Heights, Illinois.
The flight distance (direct flight from Redlands, CA to Prospect Heights, IL) is 1,675.05 mi.
1,984 mi = 3,193.12 kms