Miles between Downey, CA and Boulder, CO

There are
1,026 mi
from Downey, CA to Boulder, CO

That's the driving distance. It would take 18 hours 8 mins to go from Downey, California to Boulder, Colorado.

The flight distance (direct flight from Downey, CA to Boulder, CO) is 823.50 mi.

1,026 mi = 1.61 kms