Miles between Diamond Bar, CA and Fairfield, CA

There are
421 mi
from Diamond Bar, CA to Fairfield, CA

That's the driving distance. It would take 7 hours 48 mins to go from Diamond Bar, California to Fairfield, California.

The flight distance (direct flight from Diamond Bar, CA to Fairfield, CA) is 375.08 mi.

421 mi = 677.18 kms