There are
1,969 mi
from Diamond Bar, CA to Algonquin, IL
That's the driving distance. It would take 1 day 10 hours to go from Diamond Bar, California to Algonquin, Illinois.
The flight distance (direct flight from Diamond Bar, CA to Algonquin, IL) is 1,690.40 mi.
1,969 mi = 3,168.44 kms