Miles between Boulder, CO and Millbrae, CA

There are
1,257 mi
from Boulder, CO to Millbrae, CA

That's the driving distance. It would take 21 hours 44 mins to go from Boulder, Colorado to Millbrae, California.

The flight distance (direct flight from Boulder, CO to Millbrae, CA) is 935.03 mi.

1,257 mi = 1.61 kms