Miles between Boulder, CO and Hillsborough, CA

There are
1,260 mi
from Boulder, CO to Hillsborough, CA

That's the driving distance. It would take 21 hours 50 mins to go from Boulder, Colorado to Hillsborough, California.

The flight distance (direct flight from Boulder, CO to Hillsborough, CA) is 935.07 mi.

1,260 mi = 1.61 kms