Miles between Boulder, CO and Duarte, CA

There are
1,009 mi
from Boulder, CO to Duarte, CA

That's the driving distance. It would take 17 hours 44 mins to go from Boulder, Colorado to Duarte, California.

The flight distance (direct flight from Boulder, CO to Duarte, CA) is 808.38 mi.

1,009 mi = 1.61 kms