Miles between Diamond Bar, CA and Thornton, CO

There are
1,000 mi
from Diamond Bar, CA to Thornton, CO

That's the driving distance. It would take 17 hours 28 mins to go from Diamond Bar, California to Thornton, Colorado.

The flight distance (direct flight from Diamond Bar, CA to Thornton, CO) is 814.47 mi.

1,000 mi = 1,609.45 kms