Miles between Hillsboro, OR and Diamond Bar, CA

There are
993 mi
from Hillsboro, OR to Diamond Bar, CA

That's the driving distance. It would take 18 hours 52 mins to go from Hillsboro, Oregon to Diamond Bar, California.

The flight distance (direct flight from Hillsboro, OR to Diamond Bar, CA) is 839.99 mi.

993 mi = 1,597.77 kms