Miles between Diamond Bar, CA and Boulder, CO

There are
1,004 mi
from Diamond Bar, CA to Boulder, CO

That's the driving distance. It would take 17 hours 42 mins to go from Diamond Bar, California to Boulder, Colorado.

The flight distance (direct flight from Diamond Bar, CA to Boulder, CO) is 804.78 mi.

1,004 mi = 1,615.86 kms